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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

planktonic
Relating to plankton;plankton-like. ... (05 Mar 2000) ...

planning
In cancer care, this consists of individualising the patients treatment plan by the study of published literature, consultation with specialist colleagues, calculation of dosages and schedules and designing the protocol. ... (16 Dec 1997) ...

planning techniques
Procedures, strategies, and theories of planning. ... (12 Dec 1998) ...

plano
<microscopy> In optics, an optical surface which has been made substantially flat, the degree of flatness depending upon the performance required. ... A plano-convex lens is a positive lens with one surface flat and the other convex. In the dictionary, plano is given only as a combining form, but in practical optics it is often used alone to d …

planocellular
Relating to or composed of flat cells. ... Origin: L. Planus, flat, + cellular ... (05 Mar 2000) ...

planoconvex
<optics> Flat on one side and convex on the other, usually denoting a lens of that shape. ... (21 Jun 2000) ...

planography
Synonym for tomography ... <procedure, radiology> The recording of internal body images at a predetermined plane by means of the tomograph, also called body section roentgenography. ... Origin: Gr. Graphein = to write ... (18 Nov 1997) ...

planomania
<psychiatry> The morbid impulse to leave home and discard social restraints. ... Origin: G. Planos, wandering, + mania, frenzy ... (05 Mar 2000) ...

planorbis
<marine biology> Any fresh water air-breathing mollusk belonging to Planorbis and other allied genera, having shells of a discoidal form. ... Origin: NL, fr. L. Planus flat + orbis a circle. ... (19 Mar 1998) ...

planoscopic eyepiece
<microscopy> An American Optical Company (Reichert) eyepiece designed to flatten the field of achromatic objectives. ... (05 Aug 1998) ...

planotopokinesia
Loss of orientation in space. ... Origin: G. Planos, wandering, + topos, place, + kinesis, motion ... (05 Mar 2000) ...

planovalgus
A condition in which the longitudinal arch of the foot is flattened and everted. ... Origin: plano-+ L. Valgus, turned outward ... (05 Mar 2000) ...

plant
1. To put in the ground and cover, as seed for growth; as, to plant maize. ... 2. To set in the ground for growth, as a young tree, or a vegetable with roots. 'Thou shalt not plant thee a grove of any trees.' (Deut. Xvi. 21) ... 3. To furnish, or fit out, with plants; as, to plant a garden, an orchard, or a forest. ... 4. To engender; to generate; to …

plant antitoxin
Antitoxin specific for a phytotoxin. ... (05 Mar 2000) ...

plant association
A grouping of plant species, or a plant community, that recurs across the landscape. Plant associations are used as indicators of environmental conditions such as temperature, moisture, light, etc. ... (05 Dec 1998) ...

plant casein
Synonym for avenin ... <plant biology> A prolamine, about 25% l-glutamic acid residues, found in oats (Avena) and in various legumes; considered highly nutritious. ... Synonym: legumin, plant casein. ... (05 Mar 2000) ...

plant community
<botany, ecology> The plant populations existing in a shared habitat or environment. ... (31 Dec 1997) ...

plant components
The anatomical components of a plant, including seeds. ... (12 Dec 1998) ...

plant dermatitis
See: dermatitis venenata. ... Primary irritant dermatitis, a frequently cumulative reaction of irritation on exposure of the skin to substances which are toxic to epidermal or connective tissue cells; lesions are usually erythematous and papular, but can be purulent or necrotic, depending on the nature of the toxic material applied. ... (05 Mar 2000) …

plant epidermis
A thin layer of cells forming the outer integument of seed plants and ferns. ... (12 Dec 1998) ...

plant extracts
Concentrated pharmaceutical preparations of plants obtained by removing the active constituents therefrom with a suitable menstruum, evaporating all or nearly all the solvent, and adjusting the residual mass or powder to a prescribed standard. ... (12 Dec 1998) ...

plant families and groups
Groupings that include specific plants within larger families or divisions. ... (12 Dec 1998) ...

plant growth regulators
Any of the hormones produced naturally in plants and active in controlling growth and other functions. There are three primary classes: auxins, cytokinins, and gibberellins. ... (12 Dec 1998) ...

plant growth substances
<plant biology> Substances that, at low concentration, influence plant growth and differentiation. Formerly referred to as plant hormones or phytohormones, these terms are now suspect because some aspects of the hormone concept, notably action at a distance from the site of synthesis, do not necessarily apply in plants. Also called plant grow …

plant indican
Synonym for indican ... 1. <chemistry> A glucoside obtained from woad (indigo plant) and other plants, as a yellow or light brown sirup. It has a nauseous bitter taste, a decomposes or drying. By the action of acids, ferments, etc, it breaks down into sugar and indigo. It is the source of natural indigo. ... 2. <physiology> An indigo-form …

plant leaves
Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. ... (12 Dec 1998) ...

plant oils
<plant biology> Oils such as palm oil, flax oil, and cocoa, used for a wide variety of commercial purposes, and consequently a major focus of the biotechnology industry. ... (31 Dec 1997) ...

plant physiology
Physiological functions characteristic of plants. ... (12 Dec 1998) ...

plant poisoning
Poisoning by the ingestion of plants or its leaves, berries, roots or stalks. The manifestations in both humans and animals vary in severity from mild to life threatening. In animals, especially domestic animals, it is usually the result of ingesting moldy or fermented forage. ... (12 Dec 1998) ...

plant proteins
Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which vegetable proteins is available. ... (12 Dec 1998) ...

plant RNase
Synonym for RNase T2 ... <enzyme> An enzyme endonucleolytically cleaving RNA to 3'-nucleotides with 2',3'-cyclic nucleotides as intermediates. ... Synonym: Escherichia coli RNase I, microbial RNase II, plant RNase, RNase N2. ... (05 Mar 2000) ...

plant root cap
A cone-shaped structure in plants made up of a mass of meristematic cells that covers and protects the tip of a growing root. It is the putative site of gravity sensing in plant roots. ... (12 Dec 1998) ...

plant roots
The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. ... (12 Dec 1998) ...

plant shoots
The aerial portions of a plant, including stem, branches, and leaves and also, new immature growth on a plant. ... (12 Dec 1998) ...

plant stems
Parts of plants that usually grow vertically upwards towards the light and support the leaves, buds, and reproductive structures. ... (12 Dec 1998) ...

plant succession
<botany> The development of a plant community from its initial stage to its climax stage. ... (31 Dec 1997) ...

plant toxin
Synonym for phytotoxin ... A substance similar in its properties to an extracellular bacterial toxin. ... Synonym: plant toxin. ... Origin: phyto-+ G. Toxikon, poison ... (05 Mar 2000) ...

plant transpiration
The loss of water vapor by plants to the atmosphere. It occurs mainly from the leaves through pores (stomata) whose primary function is gas exchange. The water is replaced by a continuous column of water moving upwards from the roots within the xylem vessels. ... (12 Dec 1998) ...

plant tumours
A localised proliferation of plant tissue forming a swelling or outgrowth, commonly with a characteristic shape and unlike any organ of the normal plant. Plant tumours or galls usually form in response to the action of a pathogen or a pest. ... (12 Dec 1998) ...

plant viruses
Viruses parasitic on plants higher than bacteria. ... (12 Dec 1998) ...

planta
Synonym: sole. ... Origin: L. ... (05 Mar 2000) ...

planta pedis
Synonym for sole of foot ... The inferior aspect or bottom of the foot, much of which is in contact with the ground when standing; it is covered with hairless, usually nonpigmented skin that is especially thickened and provided with epidermal ridges over the weight-bearing areas. ... Synonym: planta pedis, regio plantaris. ... (05 Mar 2000) ...

plantago
Three different species of plantago or plantain, p. Psyllium, p. Ovata and p. Indica. The seeds swell in water and are used as laxatives. ... (12 Dec 1998) ...

plantago ovata coating
The separated outer mucilaginous layers of Plantago ovata seeds; used in simple constipation associated with lack of sufficient bulk. ... (05 Mar 2000) ...

plantago seed
Synonym for psyllium seed ... The cleaned, dried ripe seed of Plantago indica or of P. Ovata. A mild cathartic that acts by absorbing water and providing indigestible mucilaginous bulk for the intestines. Must not be used in intestinal obstruction. ... Synonym: plantago seed, plantain seed. ... (05 Mar 2000) ...

plantain
1. <botany> A treelike perennial herb (Musa paradisiaca) of tropical regions, bearing immense leaves and large clusters of the fruits called plantains. See Musa. ... 2. The fruit of this plant. It is long and somewhat cylindrical, slightly curved, and, when ripe, soft, fleshy, and covered with a thick but tender yellowish skin. The plantain is …

plantain seed
Synonym for psyllium seed ... The cleaned, dried ripe seed of Plantago indica or of P. Ovata. A mild cathartic that acts by absorbing water and providing indigestible mucilaginous bulk for the intestines. Must not be used in intestinal obstruction. ... Synonym: plantago seed, plantain seed. ... (05 Mar 2000) ...

plantalgia
Pain on the plantar surface of the foot over the plantar fascia. ... Origin: L. Planta, sole of foot, + G. Algos, pain ... (05 Mar 2000) ...

plantar aponeurosis
The very thick, central portion of the fascia investing the plantar muscles; it radiates toward the toes from the medial process of the calcaneal tuberosity and gives attachment to the short flexor muscle of the toes. ... Synonym: aponeurosis plantaris, plantar fascia. ... (05 Mar 2000) ...

plantar arch
The arterial arch formed by the lateral plantar artery running across the bases of the metatarsal bones and anastomosing with the dorsal pedis artery, either of two bony arch's of the foot, longitudinal arch or transverse arch. ... See: medial longitudinal arch of foot, lateral longitudinal arch of foot, transverse arch of foot. ... Synonym: arcus pl …

plantar arterial arch
Synonym for plantar arch ... The arterial arch formed by the lateral plantar artery running across the bases of the metatarsal bones and anastomosing with the dorsal pedis artery, either of two bony arch's of the foot, longitudinal arch or transverse arch. ... See: medial longitudinal arch of foot, lateral longitudinal arch of foot, transverse arch o …

plantar calcaneocuboid ligament
<anatomy> A strong band that passes forward and medially from the plantar surface of the calcaneus to the cuboid bone, actually forming a part of the articular 'socket.' ... Synonym: ligamentum calcaneocuboideum plantare. ... (05 Mar 2000) ...

plantar calcaneonavicular ligament
<anatomy> A dense fibroelastic ligament that extends from the sustentaculum tali to the plantar surface of the navicular bone; it supports the head of the talus. ... Synonym: ligamentum calcaneonaviculare plantare, inferior calcaneonavicular ligament, spring ligament. ... (05 Mar 2000) ...

plantar cuboideonavicular ligament
<anatomy> The ligament that unites the plantar surfaces of the cuboid and navicular bones of the tarsus. ... Synonym: ligamentum cuboideonaviculare plantare. ... (05 Mar 2000) ...

plantar cuneocuboid ligament
<anatomy> The fibrous band that unites the apex of the lateral cuneiform with the medial margin of the plantar suface of the cuboid. ... Synonym: ligamentum cuneocuboideum plantare. ... (05 Mar 2000) ...

plantar cuneonavicular ligaments
Ligaments connecting the plantar surface of the navicular with the three cuneiform bones. ... Synonym: ligamenta cuneonavicularia plantaria. ... (05 Mar 2000) ...

plantar cushion
A dense mass of fibrofatty tissue overlying the frog in the foot of the horse; serves an important shock-absorbing function. ... (05 Mar 2000) ...

plantar digital veins
Drain the plantar and distal dorsal aspects (nail beds) of the toes and pass back to form four metatarsal veins that in turn empty into the plantar venous arch. ... Synonym: venae digitales plantares. ... (05 Mar 2000) ...

plantar fascia
Synonym for plantar aponeurosis ... The very thick, central portion of the fascia investing the plantar muscles; it radiates toward the toes from the medial process of the calcaneal tuberosity and gives attachment to the short flexor muscle of the toes. ... Synonym: aponeurosis plantaris, plantar fascia. ... (05 Mar 2000) ...

plantar fasciitis
Inflammation of the plantar fascia (fasciitis), the bowstring-like tissue stretching underneath the sole which attaches at the heel. ... (12 Dec 1998) ...

plantar fibromatosis
Nodular fibroblastic proliferation in plantar fascia of one or both feet; rarely associated with contracture. ... Synonym: Dupuytren's disease of the foot. ... (05 Mar 2000) ...

plantar flexion
Turning the foot or toes toward the plantar surface. ... (05 Mar 2000) ...

plantar interosseous muscle
<anatomy> Three intrinsic muscles of foot; origin, the medial side of the third, fourth, and fifth metatarsal bones; insertion, corresponding side of proximal phalanx of the same toes; action, adducts three lateral toes; nerve supply, lateral plantar. ... Synonym: musculus interosseus plantaris. ... (05 Mar 2000) ...

plantar ligaments
The counterparts in the foot of the palmar ligaments in the hand. ... Synonym: ligamenta plantaria, accessory plantar ligaments, Cruveilhier's ligaments, glenoid ligament. ... (05 Mar 2000) ...

plantar metatarsal artery
<anatomy, artery> One of four branches of the plantar arterial arch that divide into plantar digital arteries to supply the toes. ... Synonym: arteria metatarsea plantaris. ... (05 Mar 2000) ...

plantar metatarsal ligaments
Fibrous bands connecting the plantar aspects of the bases of the metatarsals. ... Synonym: ligamenta metatarsalia plantaria. ... (05 Mar 2000) ...

plantar metatarsal veins
Veins receiving the plantar digital veins and draining in turn into the deep plantar venous arch, which empties into the medial and lateral plantar veins. ... Synonym: venae metatarseae plantares. ... (05 Mar 2000) ...

plantar muscle
Synonym for plantaris ... <anatomy, muscle> Origin, lateral supracondylar ridge; insertion, medial margin of tendo achillis and deep fascia of ankle; action, traditionally described as plantar flexion of foot; many investigators now believe the plantaris muscle to be primarily a proprioceptive organ; nerve supply, tibial nerve. ... Synonym: mus …

plantar muscle reflex
Synonym for Rossolimo's reflex ... Flicking the tops of the toes from the plantar surface causes flexion of the toes; a stretch reflex of the flexors of the toes seen in lesions of the pyramidal tracts. ... See: Starling's reflex. ... Synonym: plantar muscle reflex, Rossolimo's sign. ... (05 Mar 2000) ...

plantar quadrate muscle
Synonym for quadratus plantae ... <anatomy, muscle> Origin, by two heads from the lateral and medial borders of the inferior surface of the calcaneus; insertion, tendons of flexor digitorum longus; action, assists long flexor; nerve supply, lateral plantar. ... Synonym: musculus flexor accessorius, musculus quadratus plantae, accessory flexor m …

plantar reflex
The response to tactile stimulation of the ball of the foot, normally plantar flexion of the toes; the pathologic response is Babinski's sign. ... Synonym: sole reflex. ... (05 Mar 2000) ...

plantar space
One of four areas between fascial layers in the foot, where pus may be confined when the foot is infected. ... (05 Mar 2000) ...

plantar surface of toe
Synonym for facies digitalis plantaris ... plantar surface of toe ...

plantar syphilid
Dull red papules on the soles in secondary syphilis. ... (05 Mar 2000) ...

plantar venous arch
The arch formed by the plantar digital veins from the toes which accompanies the plantar arterial arch. ... Synonym: arcus venosus plantaris. ... (05 Mar 2000) ...

plantar venous network
A fine superficial venous network in the sole of the foot. ... Synonym: rete venosum plantare. ... (05 Mar 2000) ...

plantar wart
A wart on the sole, often painful; usually caused by human papilloma virus type 1. ... Synonym: verruca plantaris. ... Pointed wart, obsolete term for condyloma acuminatum. ... Postmortem wart, a tuberculous warty growth (tuberculosis cutis verrucosa) on the hand of one who performs postmortem examinations. ... Synonym: anatomical tubercle, anatomical …

plantaris
<anatomy, muscle> Origin, lateral supracondylar ridge; insertion, medial margin of tendo achillis and deep fascia of ankle; action, traditionally described as plantar flexion of foot; many investigators now believe the plantaris muscle to be primarily a proprioceptive organ; nerve supply, tibial nerve. ... Synonym: musculus plantaris, musculus …

plantation
1. The act or practice of planting, or setting in the earth for growth. ... 2. The place planted; land brought under cultivation; a piece of ground planted with trees or useful plants; especially, in the United States and West Indies, a large estate appropriated to the production of the more important crops, and cultivated by laborers who live on th …

plantigrade
<zoology> Walking on the sole of the foot; pertaining to the plantigrades. ... Having the foot so formed that the heel touches the ground when the leg is upright. ... Origin: L. Planta sole of the foot + gradi to walk: cf. F. Plantigrade. ... <zoology> A plantigrade animal, or one that walks or steps on the sole of the foot, as man, and th …

planting
1. The act or operation of setting in the ground for propagation, as seeds, trees, shrubs, etc.; the forming of plantations, as of trees; the carrying on of plantations, as of sugar, coffee, etc. ... 2. That which is planted; a plantation. 'Trees of righteousness, the planting of the Lord.' (Isa. Lxi. 3) ... 3. The laying of the first courses of ston …

plants
Multicellular, eukaryotic life forms of the kingdom plantae. They are characterised by a mainly photosynthetic mode of nutrition; essentially unlimited growth at localised regions of cell divisions (meristems); cellulose within cells providing rigidity; the absence of organs of locomotion; absense of nervous and sensory systems; and an alteration o …

plants, edible
An organism of the vegetable kingdom suitable by nature for use as a food, especially by human beings. Not all parts of any given plant are edible but all parts of edible plants have been known to figure as raw or cooked food: leaves, roots, tubers, stems, seeds, buds, fruits, and flowers. The most commonly edible parts of plants are fruit, usually …

plants, medicinal
Plants whose roots, leaves, seeds, bark, or other constituent possess therapeutic, tonic, purgative, or other pharmacologic activity when administered to higher animals. ... (12 Dec 1998) ...

plants, toxic
Plants or plant parts which are harmful to man or other animals. ... (12 Dec 1998) ...

plants, transgenic
Plants into which genetic material from another species has been transferred. The technique most frequently applied makes use of a natural plant-directed gene vector, the gram-negative soil bacterium agrobacterium tumefaciens. A second system more analogous to those used for transforming mammalian cell lines is the direct transfer of DNA into plant …

planula
Origin: L, a little plane. ... 1. <biology> In embryonic development, a vesicle filled with fluid, formed from the morula by the divergence of its cells in such a manner as to give rise to a central space, around which the cells arrange themselves as an envelope; an embryonic form intermediate between the morula and gastrula. Sometimes used as …

planum
A plane or flat surface. ... See: plane. ... Origin: L. Plane ... (05 Mar 2000) ...

planum interspinale
Synonym for interspinal plane ... A horizontal plane passing through the anterior superior iliac spines; it marks the boundary between the lateral and umbilical regions superiorly and the inguinal and pubic regions inferiorly. ... Synonym: planum interspinale, Lanz's line. ... (05 Mar 2000) ...

planum intertuberculare
Synonym for intertubercular plane ... A horizontal plane passing through the iliac tubercles. ... Synonym: planum intertuberculare. ... (05 Mar 2000) ...

planum occipitale
Synonym for occipital plane ... The external surface of the occipital bone above the superior nuchal line. ... Synonym: planum occipitale. ... (05 Mar 2000) ...

planum orbitale
Synonym for orbital plane ... The orbital surface of the maxilla, lying perpendicular to the orbitomeatal plane at the orbitale. ... Synonym: planum orbitale. ... (05 Mar 2000) ...

planum popliteum
Synonym for popliteal surface of femur ... The posterior surface of the lower end of the femur between the diverging lips of the linea aspera. ... Synonym: facies poplitea femoris, planum popliteum, popliteal plane of femur. ... (05 Mar 2000) ...

planum semilunatum
The area of epithelium bounding the sensory area of the crista ampullaris. ... (05 Mar 2000) ...

planum sphenoidale
Synonym for jugum sphenoidale ... A plane surface on the sphenoid bone, in front of the sella turcica, connecting the two lesser wings, and forming part of the anterior cranial fossa and especially later in life, the roof of the anteriormost portion of the sphenoidal sinus. ... Synonym: planum sphenoidale. ... (05 Mar 2000) ...

planum sternale
Synonym for sternal plane ... A plane indicated by the front surface of the sternum. ... Synonym: planum sternale. ... (05 Mar 2000) ...

planum subcostale
Synonym for subcostal plane ... A horizontal plane passing through the inferior limits of the costal margin, i.e., the tenth costal cartilages; it marks the boundary between the hypochondriac and epigastric regions superiorly and the lateral and umbilical regions inferiorly. ... Synonym: planum subcostale, infracostal line. ... (05 Mar 2000) ...

planum supracristale
Synonym for supracristal plane ... A horizontal plane passing through the summits of the iliac crests; it usually passes through the fourth lumbar spinous process. ... Synonym: planum supracristale, supracrestal plane. ... (05 Mar 2000) ...

planum temporale
Synonym for temporal plane ... A slightly depressed area on the side of the cranium, below the inferior temporal line, formed by the temporal and parietal bones, the greater wing of the sphenoid, and a part of the frontal bone. ... Synonym: planum temporale. ... (05 Mar 2000) ...

planum transpyloricum
Synonym for transpyloric plane ... A horizontal plane midway between the superior margins of the manubrium sterni and the symphysis pubis; the pylorus is not usually located on this plane in life. ... Synonym: planum transpyloricum. ... (05 Mar 2000) ...