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

pili annulati
Synonym for ringed hair ... A rare condition in which the hair shows alternate pigmented and bright segments, the latter due to air cavities within the cortex. ... Synonym: leukotrichia annularis, pili annulati, thrix annulata, trichonosus versicolor. ... (05 Mar 2000) ...

pili, sex
Filamentous or elongated proteinaceous structures which extend from the cell surface in gram-negative bacteria that contain certain types of conjugative plasmid. These pili are the organs associated with genetic transfer and have essential roles in conjugation. Normally, only one or a few pili occur on a given donor cell. this preferred use of 'pi …

piliferous cyst
A dermoid cyst containing hair. ... (05 Mar 2000) ...

pilimiction
Passage of hairs in the urine, as in cases of dermoid tumours, or of threads of mucus in the urine. ... Origin: L. Pilus, hair, + mictio, urination ... (05 Mar 2000) ...

pilin
1. General term for the protein subunit of pilus. ... 2. Protein subunit (7.2 kD) of f pili, sex pili coded for by the F plasmid. ... (18 Nov 1997) ...

piling unmerchantable material
(PUM) A logging contract requirement to remove and pile unmerchantable woody material of a specified size. ... (05 Dec 1998) ...

pill
The peel or skin. 'Some be covered over with crusts, or hard pills, as the locusts.' ... Origin: Cf. Peel skin, or Pillion. ... 1. To deprive of hair; to make bald. ... 2. To peel; to make by removing the skin. '[Jacob] pilled white streaks . . . In the rods.' (Gen. Xxx. 37) ... Origin: Cf. L. Pilare to deprive of hair, and E. Pill, n. (above). ... 1. A …

pill mass
Synonym for pilular mass ... The mixture of drug(s), excipients, diluents and binders with a suitable amount of liquid to form a plastic mass which can be rolled into a long rod and cut into the appropriate number of units for pills to be rolled from. ... Synonym: pill mass. ... (05 Mar 2000) ...

pill-rolling
A circular movement of the opposed tips of the thumb and the index finger appearing as a form of tremor in paralysis agitans. ... (05 Mar 2000) ...

pill-rolling tremor
Resting tremor of the thumb and fingers seen in Parkinson disease. ... (05 Mar 2000) ...

pill, the
Slang term for oral contraceptive pill. ... (12 Dec 1998) ...

pillar
1. The general and popular term for a firm, upright, insulated support for a superstructure; a pier, column, or post; also, a column or shaft not supporting a superstructure, as one erected for a monument or an ornament. 'Jacob set a pillar upon her grave.' (Gen. Xxxv. 20) 'The place . . . Vast and proud, Supported by a hundred pillars stood.' (Dry …

pillar cells
Cell's forming the outer and inner walls of the tunnel in the organ of Corti. ... Synonym: Corti's pillars, Corti's rods, pillar cells of Corti, tunnel cells. ... (05 Mar 2000) ...

pillar cells of Corti
Synonym for pillar cells ... Cell's forming the outer and inner walls of the tunnel in the organ of Corti. ... Synonym: Corti's pillars, Corti's rods, pillar cells of Corti, tunnel cells. ... (05 Mar 2000) ...

pillar of iris
Synonym for trabecular reticulum ... The network of fibres (pectinate ligaments) at the iridocorneal angle between the anterior chamber of the eye and the venous sinus of the sclera; it contains spaces between the fibres that are involved in drainage of the aqueous humor, and is composed of two portions: the corneoscleral part, the part attached to …

pillars of fauces
See: palatoglossal arch, palatopharyngeal arch. ... (05 Mar 2000) ...

pillars of fornix
The columna fornicis and crus fornicis. ... (05 Mar 2000) ...

pillet
A small pill. ... (05 Mar 2000) ...

pillion
A panel or cushion saddle; the under pad or cushion of saddle; especially, a pad or cushion put on behind a man's saddle, on which a woman may ride. 'His [a soldier's] shank pillion without stirrups.' (Spenser) ... Origin: Ir. Pillin, pilliun (akin to Gael. Pillean, pillin), fr. Ir. & Gael. Pill, peall, a skin or hide, prob. Fr. L. Pellis. See P …

pillow
1. Anything used to support the head of a person when reposing; especially, a sack or case filled with feathers, down, hair, or other soft material. '[Resty sloth] finds the down pillow hard.' (Shak) ... 2. <machinery> A piece of metal or wood, forming a support to equalize pressure; a brass; a pillow block. ... 3. A block under the inner end o …

pilo-
Hair. ... Origin: L. Pilus ... (05 Mar 2000) ...

pilobezoar
Synonym: trichobezoar. ... Origin: pilo-+ bezoar ... (05 Mar 2000) ...

pilocarpine esterase
<enzyme> Hydrolyzes pilocarpine to pilocarpic acid, probably not the same as acetylcholinesterase or butyrylcholinesterase ... Registry number: EC 3.1.1.- ... (26 Jun 1999) ...

pilocarpus
A genus of trees and shrubs found in Central and South America and in the West Indies. Constitutes the botanical source for pilocarpine, an alkaloid which activates cholinergic muscarinic receptors. Pilocarpine is used in the treatment of glaucoma where it is instilled in the eye. Sudorific; miotic. ... Synonym: Jaborandi. ... (05 Mar 2000) ...

pilocystic
Denoting a dermoid cyst containing hair. ... Origin: pilo-+ G. Kystis, bladder ... (05 Mar 2000) ...

piloerection
<dermatology> Erection of the hair. ... (18 Nov 1997) ...

piloid
Hairlike; resembling hair. ... Origin: pilo-+ G. Eidos, resemblance ... (05 Mar 2000) ...

piloid gliosis
An area of chronic, reactive astrocytosis composed of thin, hairlike cells in vaguely parallel array. ... (05 Mar 2000) ...

pilojection
Process of shooting shafts of stiff mammalian hair into a saccular aneurysm in the brain in order to produce thrombosis. ... Origin: pilo-+ injection ... (05 Mar 2000) ...

pilomatrixoma
A tumour composed of cells resembling those of the hair matrix, which undergo 'mummification' and may calcify. It is a relatively uncommon tumour, which may occur at any age from infancy. The majority of patients are under 20, and females are affected more than males. The lesion is usually a solitary deep dermal or subcutaneous tumour 3-30 mm in di …

pilomotor
Moving the hair; denoting the arrectores pilorum muscles of the skin and the postganglionic sympathetic nerve fibres innervating these small smooth muscles. ... Origin: pilo-+ L. Motor, mover ... (05 Mar 2000) ...

pilomotor fibres
Nerve fibre's that innervate the erector muscles of hair follicles responsible for piloerection. ... (05 Mar 2000) ...

pilomotor reflex
Contraction of the smooth muscle of the skin resulting in 'gooseflesh' caused by mild application of a tactile stimulus or by local cooling. ... (05 Mar 2000) ...

pilon fracture
A fracture of the distal metaphysis of the tibia extending into the ankle joint. ... (05 Mar 2000) ...

pilonidal
Denoting the presence of hair in a dermoid cyst or in a sinus opening on the skin. ... Origin: pilo-+ L. Nidus, nest ... (05 Mar 2000) ...

pilonidal cyst
A special kind of abscess that occurs in the cleft between the buttocks. Forms frequently in adolescence after long trips that involve sitting. ... (12 Dec 1998) ...

pilonidal fistula
Synonym for pilonidal sinus ... A dimple in the crease between the buttocks. ... (12 Dec 1998) ...

pilonidal sinus
A dimple in the crease between the buttocks. ... (12 Dec 1998) ...

pilose
Hairy, the hairs soft and clearly separated but not sparse. ... (09 Oct 1997) ...

pilosebaceous
Relating to the hair follicles and sebaceous glands. ... Origin: pilo-+ L. Sebum, suet ... (05 Mar 2000) ...

pilosis
Synonym: hirsutism. ... Origin: pilo-+ G. -osis, condition ... (05 Mar 2000) ...

pilot
1. One employed to steer a vessel; a helmsman; a steersman. ... 2. Specifically, a person duly qualified, and licensed by authority, to conduct vessels into and out of a port, or in certain waters, for a fixed rate of fees. ... 3. Figuratively: A guide; a director of another through a difficult or unknown course. ... 4. An instrument for detecting the …

pilot projects
Small-scale tests of methods and procedures to be used on a larger scale if the pilot study demonstrates that these methods and procedures can work. ... (12 Dec 1998) ...

pilot scale
The size of a system between the small laboratory model size (bench scale) and a full-size system. ... (05 Dec 1998) ...

Piltz
Jan, Polish neurologist, 1870-1931. ... See: Piltz sign, Westphal-Piltz phenomenon. ... (05 Mar 2000) ...

Piltz sign
Synonym for eye-closure pupil reaction ... A constriction of both pupils when an effort is made to close eyelids forcibly held apart. A variant of the pupil response to near vision. ... Synonym: Galassi's pupillary phenomenon, Gifford's reflex, lid-closure reaction, orbicularis phenomenon, orbicularis pupillary reflex, Piltz sign, Westphal's pupillar …

pilula
A pill or pilule. ... Origin: L. Dim. Of pila, a ball ... (05 Mar 2000) ...

pilular
Relating to a pill. ... (05 Mar 2000) ...

pilular mass
The mixture of drug(s), excipients, diluents and binders with a suitable amount of liquid to form a plastic mass which can be rolled into a long rod and cut into the appropriate number of units for pills to be rolled from. ... Synonym: pill mass. ... (05 Mar 2000) ...

pilule
A small pill. ... Origin: L. Pilula ... (05 Mar 2000) ...

pilus
Hair like projection from surface of some bacteria. Involved in adhesion to surfaces (may be important in virulence) and specialised sex pili are involved in conjugation with other bacteria. Major constituent is a protein, pilin. ... (18 Nov 1997) ...

pim 1
<oncogene> Oncogene from murine T-cell lymphomas, encoding a serine/threonine protein kinase. ... (18 Nov 1997) ...

pimaricin
C34H49NO14;an antifungal antibiotic for topical use, produced by Streptomyces natalensis; effective against Aspergillus, Candida, and Mucor species. ... Synonym: natamycin. ... (05 Mar 2000) ...

pimelic acid
HOOC-(CH2)5-COOH; Heptanedioic acid;an intermediate in the oxidation of oleic acid in some microorganisms; a precursor of biotin. ... (05 Mar 2000) ...

pimelic acids
A group of compounds that are derivatives of heptanedioic acid with the general formula r-c7h11o4. ... (12 Dec 1998) ...

pimelo-
Fat, fatty. ... Origin: G. Pimele, soft fat, lard, fr. Piar, fat ... (05 Mar 2000) ...

pimelorrhoea
Synonym: fatty diarrhoea. ... Origin: pimelo-+ G. Rhoia, a flux ... (05 Mar 2000) ...

pimelorthopnea
Orthopnea; difficulty breathing in any but the erect posture, due to obesity. ... Synonym: piorthopnea. ... Origin: pimelo-+ G. Orthos, straight, + pnoe, breath ... (05 Mar 2000) ...

pimozide
<drug> This antipsychotic drug is used to treat schizophrenia. ... (09 Oct 1997) ...

pimpernel
<botany> A plant of the genus Anagallis, of which one species (A. Arvensis) has small flowers, usually scarlet, but sometimes purple, blue, or white, which speedily close at the approach of bad weather. Water pimpernel. ... <botany> See Brookweed. ... Origin: F. Pimprenelle; cf. Sp. Pimpinela, It. Pimpinella; perh. From LL. Bipinnella, fo …

pimples
Oil (sebaceous) glands infected with bacteria, resulting in an inflamed area with pus formation. Pimples are due to overactivity of the oil glands located at the base of the hair follicles, especially on the face, back, chest, and shoulders. ... (12 Dec 1998) ...

pin
To fasten with, or as with, a pin; to join; as, to pin a garment; to pin boards together. 'Aa if she would pin her to her heart.' To pin one's faith upon, to depend upon; to trust to. ... Origin: See Pin. ... <chemistry> To peen. ... 1. A piece of wood, metal, etc, generally cylindrical, used for fastening separate articles together, or as a sup …

pin amalgam
An amalgam restoration held in place largely by small metal rods protruding from holes drilled into tooth structure. ... (05 Mar 2000) ...

pin and ligature cutter
<dentistry> A special plier use to cur off arch wires, ligatures etc. ... (08 Jan 1998) ...

pin implant
A type of implant usually rod-shaped, used in the area of the maxillary sinuses. ... (05 Mar 2000) ...

pinacocyte
A cell type forming the surface layers of a sponge. Capable of synthesising collagen. ... (18 Nov 1997) ...

pinacone
<chemistry> A white crystalline substance related to the glycols, and made from acetone; hence, by extension, any one of a series of substances of which pinacone proper is the type. ... Alternative forms: pinakone. ... Origin: From Gr, a tablet. So called because it unites with water so as to form tablet-shaped crystals. ... Source: Websters Dic …

pinacyanol
A basic dye, C25H25N2I, used as a colour sensitiser (violet red in water, blue in alcohol) in photography and for vital staining of leukocytes. ... (05 Mar 2000) ...

Pinard
Adolphe, French obstetrician, 1844-1934. ... See: Pinard's manoeuvre. ... (05 Mar 2000) ...

Pinard's manoeuvre
In management of a frank breech presentation, pressure on the popliteal space is made by the index finger while the other three fingers flex the leg while sliding it along the other thigh as the foot of the flexed leg is brought down and out. ... (05 Mar 2000) ...

pincement
A pinching manipulation in massage. ... Origin: Fr. Pinching ... (05 Mar 2000) ...

pincer nail
Transverse overcurvature of the nail that increases distally, causing the lateral borders of the nail to pinch the soft tissue with resulting tenderness; may result from a developmental anomaly or subungual exostosis. ... (05 Mar 2000) ...

pinch graft
Small bits of skin, of partial or full thickness, removed from a healthy area and seeded in a site to be covered. ... Synonym: Reverdin graft. ... (05 Mar 2000) ...

pinch reflex diode
<radiobiology> A self-insulated ion diode in which the magnetic field from the ion and electron flow alone provide electron control, and the ion source is an anode plasma formed by relexing the electrons through a thin plastic foil. ... (09 Oct 1997) ...

pincushion distortion
<microscopy> A geometrical distortion in a video picture, or a form of optical aberration, that makes the middle of all sides of a square appear to bow inward. The distortion can amount to several percent of the picture height in some intensified camera tubes. ... See: Aberration, Distortion, Barrel distortion. ... (05 Aug 1998) ...

Pindborg
Jens J., Danish oral pathologist, *1921. ... See: Pindborg tumour. ... (05 Mar 2000) ...

Pindborg tumour
Synonym for calcifying epithelial odontogenic tumour ... A benign epithelial odontogenic neoplasm derived from the stratum intermedium of the enamel organ; a painless, slowly growing, mixed radiolucent-radiopaque lesion characterised histologically by cords of polyhedral epithelial cells, deposits of amyloid, and spherical calcifications. ... Synonym …

pindolol
<chemical> A beta-adrenergic antagonist with some agonist activity. Pindolol is used in the treatment of angina pectoris, arrhythmias, glaucoma, and hypertension. ... Pharmacological action: adrenergic beta-antagonists, anti-arrhythmia agents, antihypertensive agents, sympatholytics, vasodilator agents. ... Chemical name: 2-Propanol, 1-(1H-indo …

pine
1. <botany> Any tree of the coniferous genus Pinus. See Pinus. ... There are about twenty-eight species in the United States, of which the white pine (P. Strobus), the Georgia pine (P. Australis), the red pine (P. Resinosa), and the great West Coast sugar pine (P. Lambertiana) are among the most valuable. The Scotch pine or fir, also called No …

pine oil
The volatile oil from the wood of Pinus palustris and other species of Pinus; used as a deodorant and disinfectant. ... (05 Mar 2000) ...

pine tar
Obtained by the destructive distillation of the wood of Pinus palustris and other species of Pinus; used internally as an expectorant, and externally in the treatment of skin diseases. ... Synonym: liquid pitch. ... (05 Mar 2000) ...

pine-needle oil
A volatile oil distilled with steam from the fresh leaf of Pinus mugo; has been used by inhalation and spray in catarrhal affections of the air passages, and locally in rheumatism; also used as a flavoring and in perfumery. ... (05 Mar 2000) ...

pineal
A gland-like structure in the brain which appears to be the major site of melatonin biosynthesis. The exact role of the pineal remain obscure. ... (27 Sep 1997) ...

pineal body
A small conical midline body attached to the posterior part of the third ventricle and lying between the superior colliculi, below the splenium of the corpus callosum. ... (12 Dec 1998) ...

pineal cells
Cell's of the corpus pineale or pinealocyte. ... (05 Mar 2000) ...

pineal cyst
A cyst of the pineal gland; rarely of clinical importance. ... (05 Mar 2000) ...

pineal eye
A non-image-forming, photoreceptive eye in or near the median line in certain crustacea and lower vertebrates; homologue of pineal gland in higher forms. ... Synonym: epiphysial eye, parietal eye. ... (05 Mar 2000) ...

pineal gland
A small, flat gland found within the brain which produces the hormones melatonin and serotonin. ... (09 Oct 1997) ...

pineal gland calcification
<radiology> Visible on plain skull film (33-76% in adults), seen more frequently on CT, rare in kids less than 6 y.o. (presence suggests neoplasm), usually in the form of a cluster of amorphous, irregular densities, may be solitary, the size of calcification: usually 3-5 mm, if greater than 1 cm, suspect pinealoma, AV malformation, etc. See: …

pineal habenula
The peduncle or stalk of the pineal gland. ... See: habenula. ... (05 Mar 2000) ...

pineal recess
A diverticulum from the posterior part of the third ventricle extending back between the posterior commissure and the habenular commissure. ... Synonym: recessus pinealis. ... (05 Mar 2000) ...

pineal region tumours
Type of brain tumours. ... (12 Dec 1998) ...

pineal tumours
<radiology> SIGNS: aqueductal obstruction most likely to be hydrocephalus, paralysis of upward gaze (due to pressure on quarigeminal plate), precocious puberty, symptoms of hypothalamic, thalamic, cerebellar or pyramidal lesion TYPES: germ-cell (teratoid) tumours, teratoma, germinoma / atypical teratoma, endodermal sinus (yolk sac) tumour, ch …

pinealectomy
<procedure> Removal of the pineal body. ... Origin: pineal + G. Ektome, excision ... (05 Mar 2000) ...

pinealocyte
A cell of the pineal body with long processes ending in bulbous expansions. Pinealocytes receive a direct innervation from sympathetic neurons that form recognizable synapses. The club-shaped endings of pinealocyte processes terminate in perivascular spaces surrounding capillaries. ... Synonym: chief cell of corpus pineale, parenchymatous cell of co …

pinealoma
A tumour of the pineal body composed of neoplastic nests of large cells. Tumours in this region are rare, accounting for less than 1% of intracranial tumours, although in children they constitute 3%-8% of intracranial tumours. Its symptoms include hydrocephalus, conjugate paralysis of upward gaze, disturbances of gait, and precocious puberty, the l …

pinealopathy
Disease of the pineal gland. ... Origin: pineal + G. Pathos, disease ... (05 Mar 2000) ...

Pinel, Philippe
<person> French psychiatrist, 1745-1826. ... See: Pinel's system. ... (05 Mar 2000) ...

Pinel's system
The abolition of forcible restraint in the treatment of the mental hospital patient. ... (05 Mar 2000) ...

pineoblastoma
A type of brain tumour. ... (12 Dec 1998) ...