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


oesophagostenosis
Stricture or a general narrowing of the oesophagus. ... Origin: oesophagus + G. Stenosis, a narrowing ... (05 Mar 2000) ...

oesophagostomiasis
Infection of the intestinal tract with worms of the genus oesophagostomum. This condition occurs mainly in animals other than man. ... (12 Dec 1998) ...

oesophagostomum
A genus of nematodes of the superfamily strongyloidea, parasitic in the intestines of animals. The adults are usually free in the intestinal lumen; the larvae encyst in the wall. ... (12 Dec 1998) ...

Oesophagostomum apiostomum
A primate species that has been reported in northern Nigeria and central Africa to encyst under the submucosa of the human intestine and occasionally cause dysentery; a common parasite of monkeys and apes, both in captivity and in the wild. ... (05 Mar 2000) ...

Oesophagostomum brevicaudum
A species that occurs in the caecum and colon of pigs in North America and India. ... (05 Mar 2000) ...

Oesophagostomum brumpti
A species described from African monkeys and reported occasionally in humans. ... (05 Mar 2000) ...

Oesophagostomum columbianum
A species that occurs in sheep, goats, and wild African antelopes; except when present in large numbers, it does not appear to seriously affect the health of the host. ... (05 Mar 2000) ...

Oesophagostomum dentatum
A species that affects the colon of swine; the lesions are similar to those in sheep. ... (05 Mar 2000) ...

Oesophagostomum georgianum
A species that occurs in the caecum and colon of pigs in the U.S. ... (05 Mar 2000) ...

Oesophagostomum quadrispinulatum
A species that occurs in the caecum and colon of pigs in the Americas, Europe, and Southeast Asia. ... (05 Mar 2000) ...

Oesophagostomum radiatum
A species that occurs worldwide in cattle and water buffalo; the lesions are similar to those of sheep. ... (05 Mar 2000) ...

Oesophagostomum stephanostomum
A species occurring in chimpanzees, monkeys, and gorillas in Africa, but also reported from humans and monkeys in Brazil. ... (05 Mar 2000) ...

Oesophagostomum venulosum
A species that occurs worldwide in the caecum and colon of cattle, sheep, goats, deer, and many other ruminants. ... (05 Mar 2000) ...

oesophagostomy
<procedure> Surgical formation of an external opening (stoma) into the oesophagus. ... (12 Dec 1998) ...

oesophagotomy
<procedure> An incision through the wall of the oesophagus. ... Origin: oesophagus + G. Tome, an incision ... (05 Mar 2000) ...

oesophagram
A series of X-rays of the oesophagus. The X-ray pictures are taken after the patient drinks a solution that coats and outlines the walls of the oesophagus. Also called a barium swallow. ... (12 Dec 1998) ...

oesophagus
A long hollow muscular tube that connects the pharynx to the stomach. ... (27 Sep 1997) ...

oesophoria
A tendency for the eyes to turn inward, prevented by binocular vision. ... Synonym: esodeviation. ... Origin: G. Eso, inward, + phora, a carrying ... (05 Mar 2000) ...

oesophoric
Relating to or marked by oesophoria. ... (05 Mar 2000) ...

oestradiol
A hormone (272 D) synthesised mainly in the ovary, but also in the placenta, testis and possibly adrenal cortex. A potent oestrogen. ... (18 Nov 1997) ...

oestrids
Common name for botflies of the family Oestridae, such as Oestrus. ... Origin: G. Oistros, gadfly ... (05 Mar 2000) ...

oestriol
Synonym for estriol ... <chemical> (16 alpha,17 beta)-estra-1,3,5(10)-triene-3,16,17-triol. A metabolite of estradiol and usually the predominant oestrogenic metabolite in urine. During pregnancy, large amounts of estriol are produced by the placenta. It has also been obtained from plant sources. The 16 beta-isomer has also been isolated from …

oestrogen
<endocrinology, hormone> A generic term for oestrus producing steroid compounds, the female sex hormones. ... In humans, oestrogen is formed in the ovary, possibly the adrenal cortex, the testis and the foetoplacental unit, it has various functions in both sexes. It is responsible for the development of the female secondary sex characteristics …

oestrogen antagonist
<pharmacology> A drug or compound which inhibit or antagonise the action or biosynthesis of oestrogen. ... Tamoxifen also has agonist or stimulatory actions as well as blocking effects. There are also selective oestrogen-receptor modulators (SERMs). For example, raloxifene (trade name Evista) is classified as a SERM because it prevents bone lo …

oestrogen receptor
<cell biology> Cytoplasmic proteins that bind oestrogens and migrate to the nucleus where they regulate DNA transcription. Evaluation of the state of oestrogen receptors in breast cancer patients has become clinically important and determines the likelihood of response to anti-oestrogen therapy with tamoxifen. ... (17 Jul 2002) ...

oestrogen replacement therapy
<endocrinology, gynaecology> The use of oestrogenic substances in postmenopausal or other oestrogen-deficient women to alleviate effects of hormone deficiency, such as vasomotor symptoms, dyspareunia, and progressive development of osteoporosis. ... (12 Dec 1998) ...

oestrogenic
1. Causing estrus in animals. ... 2. Having an action similar to that of an oestrogen. ... (05 Mar 2000) ...

oestrogenic hormone
<pharmacology> A female hormone produced by the ovaries (or an equivalent hormone synthesised in the laboratory). Oestrogen deficiency can lead to osteoporosis. ... (12 Dec 1998) ...

oestrogenism
<veterinary> A mycotoxic disease of pigs associated with eating moldy feeds containing the fungus Fusarium graminearum; the causative toxin is zeralenone, which produces a form of vulvovaginitis. ... (05 Mar 2000) ...

oestrogens
A class of sex hormones associated with the development and maintenance of secondary female sex characteristics and control of the cyclical changes in the reproductive cycle. They are also required for pregnancy maintenance and have an anabolic effect on protein metabolism and water retention. ... (12 Dec 1998) ...

oestrogens, catechol
2- or 4-hydroxyoestrogens. Substances that are physiologically active in mammals, especially in the control of gonadotropin secretion. Physiological activity can be ascribed to either an oestrogenic action or interaction with the catecholaminergic system. ... (12 Dec 1998) ...

oestrogens, conjugated
An amorphous preparation containing water-soluble, conjugated forms of mixed oestrogens obtained from urine of pregnant mares. The principal oestrogen present is sodium estrone sulfate. The total oestrogenic potency of the preparation is expressed in terms of an equivalent quantity of sodium estrone sulfate. ... (12 Dec 1998) ...

oestrogens, synthetic
Compounds obtained by chemical synthesis which possess oestrogenic activity, but differ in structure from naturally occurring oestrogens. ... (12 Dec 1998) ...

oestrone
Synonym for estrone ... <chemical> 3-hydroxyestra-1,3,5(10)-trien-17-one. A metabolite of estradiol but possessing less biological activity. It is found in the urine of pregnant women and mares, in the human placenta, and in the urine of bulls and stallions. According to the fourth annual report on carcinogens (ntp 85-002, 1985), estrone may r …

oestrosis
Infection of small ruminants and rarely humans with larvae of the fly Oestrus ovis. ... (05 Mar 2000) ...

oestrus
1. <zoology> A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis. ... 2. A vehement desire; especially. ... <physiology> The periodical sexual impulse of animals; heat; rut. ... Origin: L, a gadfly; also, frenzy, fr.Gr. Gadfly; hence, sting, fury, insane desire, frenzy. ... Source: Webst …

OFD syndrome
Synonym for orodigitofacial dysostosis ... <syndrome> An inherited syndrome, lethal in males, with varying combinations of defects of the oral cavity, face, and hands, including lobulated or bifid tongue, cleft or pseudocleft palate, tongue tumours, missing or malpositioned teeth, hypoplastic nasal alar cartilage, depressed nasal bridge, brach …

off
1. On the farther side; most distant; on the side of an animal or a team farthest from the driver when he is on foot; in the United States, the right side; as, the off horse or ox in a team, in distinction from the nigh or near horse or ox; the off leg. ... 2. Designating a time when one is not strictly attentive to business or affairs, or is absent …

off-label
Use of a drug for a disease or condition other than the indication for which it was approved by the FDA. For example: many doctors prescribe paromomycin (humatin) for cryptosporidiosis, although it is not approved for treating this disease. ... (09 Oct 1997) ...

off-label use
In the United States, the regulations of the Food and drug administration (FDA) permit physicians to prescribe approved medications for other than their intended indications. This practice is known as off-label use. ... (12 Dec 1998) ...

off-road motor vehicles
Motorised, recreational vehicles used on non-public roads. They include all-terrain vehicles, dirt-bikes, minibikes, motorbikes, trailbikes, and snowmobiles. Excludes motorcycles, which are considered public road vehicles. ... (12 Dec 1998) ...

offend
1. To strike against; to attack; to assail. ... 2. To displease; to make angry; to affront. 'A brother offended is harder to be won than a strong city.' (Prov. Xviii. 19) ... 3. To be offensive to; to harm; to pain; to annoy; as, strong light offends the eye; to offend the conscience. ... 4. To transgress; to violate; to sin against. 'Marry, sir, he h …

offensive
1. Giving offense; causing displeasure or resentment; displeasing; annoying; as, offensive words. ... 2. Giving pain or unpleasant sensations; disagreeable; revolting; noxious; as, an offensive smell; offensive sounds. 'Offensive to the stomach.' ... 3. Making the first attack; assailant; aggressive; hence, used in attacking; opposed to defensive; as …

offertory
Origin: L. Offertorium the place to which offerings were brought, in LL. Offertory: cf.F. Offertoire. ... 1. The act of offering, or the thing offered. ... 2. An anthem chanted, or a voluntary played on the organ, during the offering and first part of the Mass. That part of the Mass which the priest reads before uncovering the chalice to offer up the …

office
1. That which a person does, either voluntarily or by appointment, for, or with reference to, others; customary duty, or a duty that arises from the relations of man to man; as, kind offices, pious offices. 'I would I could do a good office between you.' (Shak) ... 2. A special duty, trust, charge, or position, conferred by authority and for a publi …

office automation
Use of computers or computer systems for doing routine clerical work, e.g., billing, records pertaining to the administration of the office, etc. ... (12 Dec 1998) ...

office management
Planning, organizing, and administering activities in an office. ... (12 Dec 1998) ...

office nursing
Nursing practice limited to assisting a physician in his private office. ... (12 Dec 1998) ...

office visits
Visits made by patients to health service providers' offices for diagnosis, treatment, and follow-up. ... (12 Dec 1998) ...

officer
1. One who holds an office; a person lawfully invested with an office, whether civil, military, or ecclesiastical; as, a church officer; a police officer; a staff officer. 'I am an officer of state.' ... 2. Specifically, a commissioned officer, in distinction from a warrant officer. Field officer, General officer, etc. See Field, General. Etc. Offic …

official
1. Of or pertaining to an office or public trust; as, official duties, or routine. 'That, in the official marks invested, you Anon do meet the senate.' (Shak) ... 2. Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority; as, an official statement or report. ... 3. <pharmacology> App …

official formula
A formula contained in the Pharmacopeia or the National Formulary. ... (05 Mar 2000) ...

officinal
1. Used in a shop, or belonging to it. ... 2. <pharmacology> Kept in stock by apothecaries; said of such drugs and medicines as may be obtained without special preparation or compounding; not magistral. ... This term is often interchanged with official, but in strict use officinal drugs are not necessarily official. See Official. ... Origin: F, …

offset
In general, that which is set off, from, before, or against, something; as: ... 1. <botany> A short prostrate shoot, which takes root and produces a tuft of leaves, etc. ... 2. A sum, account, or value set off against another sum or account, as an equivalent; hence, anything which is given in exchange or retaliation; a set-off. ... 3. A spur fro …

ofloxacin
<chemical> An orally administered broad-spectrum quinolone antibacterial drug active against most gram-negative and gram-positive bacteria. Clinical efficacy has been confirmed in a variety of systemic infections as well as in acute and chronic urinary tract infections. ... Pharmacological action: anti-infective agents, fluoroquinolone, anti-i …

Ofuji's disease
Synonym for eosinophilic pustular folliculitis ... A dermatosis characterised by sterile pruritic papules and pustules that coalesce to form plaques with papulovesicular borders; spontaneous exacerbations and remissions may be accompanied by peripheral leukocytosis, eosinophilia, or both, and may result in eventual destruction of hair follicles and …

ogee
1. A molding, the section of which is the form of the letter S, with the convex part above; cyma reversa. ... 2. Hence, any similar figure used for any purpose. Ogee arch, a pointed arch, each of the sides of which has the curve of an ogee, that is, has a reversed curve near the apex. ... Origin: F. Ogive, augive, LL. Augiva, of uncertain origin; cf. …

Ogilvie's syndrome
<syndrome> Pseudo-obstruction believed to be the result of motility disturbance involving the large or small intestine but without physical obstruction. ... (05 Mar 2000) ...

Ogino-Knaus rule
The time in the menstrual period when conception is most likely to occur is at about midway between two menstrual periods; fertilization of the ovum is least likely just before or just after menstruation; the basis for the rhythm method of contraception. ... (05 Mar 2000) ...

Ogino, Kyusaka
<person> 20th century Japanese physician. ... See: Ogino-Knaus rule. ... (05 Mar 2000) ...

Ogston-Luc operation
An operation for frontal sinus disease; a skin incision is made from the inner third of the edge of the orbit toward the root of the nose or outward; the periosteum is pushed upward and outward, and the sinus is opened on the outer side of the median line; then a wide opening is made by curetting the nasofrontal duct, interior of the sinus, and ant …

Ogston, Sir Alexander
<person> Scottish surgeon, 1844-1929. ... See: Ogston's line, Ogston-Luc operation. ... (05 Mar 2000) ...

Ogston's line
A line drawn from the adductor tubercle of the femur to the intercondylar notch; a guide to resection of the medial condyle for knock-knee. ... (05 Mar 2000) ...

Oguchi, Chita
<person> Japanese ophthalmologist, 1875-1945. ... See: Oguchi's disease. ... (05 Mar 2000) ...

Oguchi's disease
A rare, congenital, nonprogressive night blindness with yellow or gray colouration of fundus; after 2 or 3 hours in total darkness, normal colour of fundus returns; autosomal recessive inheritance. ... (05 Mar 2000) ...

Ogura operation
Orbital decompression by removal of the floor of the orbit through an opening made in the supradental (canine) fossa. ... (05 Mar 2000) ...

Ogura, Joseph
<person> U.S. Otolaryngologist, *1915. ... See: Ogura operation. ... (05 Mar 2000) ...

OHI
<abbreviation> Oral Hygiene Index. ... (05 Mar 2000) ...

OHI-S
<abbreviation> Simplified Oral Hygiene Index. ... (05 Mar 2000) ...

ohm
<physics> The standard unit in the measure of electrical resistance, being the resistance of a circuit in which a potential difference of one volt produces a current of one ampere. As defined by the International Electrical Congress in 1893, and by United States Statute, it is a resistance substantially equal to 10^9 units of resistance of th …

Ohm, Georg
<person> German physicist, 1787-1854. ... See: ohm, Ohm's law. ... (05 Mar 2000) ...

ohm's law
<physics> The relationship between the net current and the electric field in a conducting medium. For simple resistors, the voltage equals current times resistance, V = IR. In plasmas the generalised Ohm's Law is a more complex tensor relationship involving the vector current density, the vector for the electric field, and a generalised resis …

ohmammeter
A combined ohmmeter and ammeter. ... (05 Mar 2000) ...

ohmmeter
An instrument for determining the resistance, in ohms, of a conductor. ... (05 Mar 2000) ...

ohne Hauch
Term used to designate the nonspreading growth of nonflagellated bacteria on agar media; also applied to somatic agglutination. ... See: O antigen. ... Origin: Ger. Without breath ... (05 Mar 2000) ...

Ohngren's line
A theoretical plane passing between the medial canthus of the eye and the angle of the mandible; used as an arbitrary dividing line in classifying localised tumours of the maxillary sinus; tumours above the line invade vital structures early and have a poorer prognosis, whereas those below the line have a more favourable prognosis. ... (05 Mar 2000) …

oidia
Plural of oidium. ... (05 Mar 2000) ...

oidiomycin
An antigen used to demonstrate cutaneous hypersensitivity in patients infected with one of the Candida species; one of a series of antigens used to demonstrate an immunocompromised patient's capacity to react to any cutaneous antigen. ... Origin: oidium + G. Mykes, fungus, + -in ... (05 Mar 2000) ...

oidium
<botany> A genus of minute fungi which form a floccose mass of filaments on decaying fruit, etc. Many forms once referred to this genus are now believed to be temporary conditions of fungi of other genera, among them the vine mildew (Oidium Tuckeri), which has caused much injury to grapes. ... Origin: NL, dim. Fr. Gr. Egg. ... Source: Websters …

oil
A triglyceride that is liquid at room temperature. ... Compare: fat. ... (09 Oct 1997) ...

oil bath
In chemistry, a vessel containing oil, in which a container holding a substance to be heated or evaporated can be immersed. ... (05 Mar 2000) ...

oil cyst
A cyst resulting from loss of the epithelial lining of a sebaceous, dermoid, or lacteal cyst, or from the subcutaneous injection of oil or fat material. ... (05 Mar 2000) ...

oil embolism
Synonym for fat embolism ... <orthopaedics> The occurrence of fat globules in the bloodstream following fracture of a long bone, in burns, in childbirth or in association with fatty degeneration of the liver. ... Symptoms occur when fat globules block vessels within the lung (i.e. Pulmonary embolism) or the cerebral vasculature (i.e. Stroke). F …

oil glands
Synonym for sebaceous glands ... Numerous holocrine glands in the dermis that usually open into the hair follicles and secrete an oily semifluid sebum. ... Synonym: glandulae sebaceae, oil glands, sebaceous follicles. ... (05 Mar 2000) ...

oil of American wormseed
Synonym for oil of chenopodium ... Volatile oil from the fresh above ground part of the flower, American wormseed, Chenopodium ambrosioides, or C. Anthelminticum. Used as an anthelmintic. ... Synonym: oil of American wormseed. ... (05 Mar 2000) ...

oil of anise
Volatile oil derived from the dried ripe fruit of Pimpinella anisum (family Umbelliferae) or of Illicium verum, (family Magnoliaceae) (Chinese star anise); has a characteristic anise aroma, resembling fennel. Used in manufacture of liqueurs, and as flavoring for candies, cookies, dentifrices. Pharmaceutical aid (flavor). Carminative. ... (05 Mar 200 …

oil of bay
Volatile oil derived by steam distillation of the dried leaves of Pimenta (Myrcia) acris (family Myrtaceae); oil of myrcia; used as an aromatic in the manufacture of bay rum and as a pharmaceutical aid. ... (05 Mar 2000) ...

oil of bergamot
Volatile oil derived by steam distillation from the rind of the fresh fruit of Citrus aurantium or C. Bergamia; contains l-linalyl acetate, l-linalool; d-limonene, dipentene, bergaptene; used as a deodorant in preparations containing malodorous ingredients and as an aromatic in perfumes, hairdressings, and pomades. ... (05 Mar 2000) ...

oil of bitter almond
Volatile oil from the dried ripe kernels of bitter almonds or from other kernels containing amygdalin, such as apricots, peaches, plums and cherries; obtained by steam distillation subsequent to maceration of the source with water. Formerly used as an antipruritic; poisonous-releases hydrocyanic acid (hydrogen cyanide). Only the oil free of hydroge …

oil of bitter orange
Volatile oil obtained by steam distillation from the fresh peel of Citrus aurantium (family Rutaceae). Aromatic material used as a flavoring agent in pharmaceuticals and foods and liquors; also used in perfumes. ... (05 Mar 2000) ...

oil of cardamom
Volatile oil obtained by steam distillation from the seeds of Elettaria cardamomum (family Zingiberacea.) A flavoring agent in pharmaceuticals (syrups), liquors, sauces, confections and baked goods; formerly used as a carminative. ... (05 Mar 2000) ...

oil of chenopodium
Volatile oil from the fresh above ground part of the flower, American wormseed, Chenopodium ambrosioides, or C. Anthelminticum. Used as an anthelmintic. ... Synonym: oil of American wormseed. ... (05 Mar 2000) ...

oil of cherry laurel
Volatile oil derived by steam distillation from Prunus laurocerasus (family Rosaceae); similar to oil of bitter almond; highly toxic due to hydrogen cyanide content. ... (05 Mar 2000) ...

oil of cinnamon
Volatile oil obtained by steam distillation from the leaves and twigs of Cinnamomum cassia (family Lauracea). A flavor in foods and perfumes. ... (05 Mar 2000) ...

oil of citronella
Volatile oil obtained by steam distillation of fresh lemon grass. Contains citranellol; used as an insect repellent either on the skin or in the form of incense; also used as a perfume. ... (05 Mar 2000) ...

oil of clove
Volatile oil obtained by steam distillation of the dried flower buds of Eugenia caryophyllata (family Myrtacea). Contains about 85% eugenol along with other constituents. Used in dentistry as a local anaesthetic and component of temporary fillings of the teeth. Also used to flavor foods; strong, pungent odour. ... Synonym: clove oil. ... (05 Mar 2000 …

oil of coriander
Volatile oil from the dried ripe fruit of Coriandrum sativum (family Umbelliferae). Flavoring in foods and alcoholic beverages. ... (05 Mar 2000) ...

oil of crispmint
Synonym for oil of spearmint ... Volatile oil from the flowering tops of Mentha spicata (family Labiatae, pharmaceutical aid (flavor) and a carminative. ... Synonym: oil of crispmint, oil of curled mint. ... (05 Mar 2000) ...

oil of cubeb
Volatile oil of the unripe fruit of Piper cubeba (family Piperaceae). Formerly used as a urinary antiseptic. ... (05 Mar 2000) ...

oil of curled mint
Synonym for oil of spearmint ... Volatile oil from the flowering tops of Mentha spicata (family Labiatae, pharmaceutical aid (flavor) and a carminative. ... Synonym: oil of crispmint, oil of curled mint. ... (05 Mar 2000) ...