| piezogenic pedal papule | Pressure-induced papules of the heel, occurring probably as a result of herniation of fat tissue. Pruritic urticarial papules and plaques of pregnancy (PUPPP), intensely pruritic papulovesicles that begin on the abdomen in the third trimester and spread peripherally, resolves rapidly after delivery and does not affect the foetus. Split papules, papule's at commissures of the mouth seen in some cases of secondary syphilis. (05 Mar 2000) |
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| piezometer | 1. <apparatus, physics> An instrument for measuring the compressibility of liquids. 2. <physics> A gauge connected with a water main to show the pressure at that point. Origin: Gr. To press: cf. F. Piezometre. Source: Websters Dictionary (01 Mar 1998) |
| PIF | <abbreviation> Prolactin-inhibiting factor. (05 Mar 2000) |
| piffara | A fife; also, a rude kind of oboe or a bagpipe with an inflated skin for reservoir. Origin: It. Piffero. Source: Websters Dictionary (01 Mar 1998) |
| pig | 1. The young of swine, male or female; also, any swine; a hog. "Two pigges in a poke." 2. <zoology> Any wild species of the genus Sus and related genera. 3. [Cf. Sow a channel for melted iron] An oblong mass of cast iron, lead, or other metal. See Mine pig, under Mine. 4. One who is hoggish; a greedy person. Masked pig. A nickname for a quadrant or sextant. A pig in a poke (that is, bag), a blind bargain; something bought or bargained for, without the quality or the value being known. Origin: Cf. D. Big, bigge, LG. Bigge, also Dan. Pige girl, Sw. Piga, Icel. Pika. Source: Websters Dictionary (01 Mar 1998) |
| pig lung carbonyl reductase | <enzyme> Tetrameric carbonyl reductase; mw 24 kD; properties distinct from monomeric cr; it is mainly distributed in the mitochondria of the pig lung; exhibits very low substrate specificity for aromatic and aliphatic carbonyl compounds and catalyses the oxidation of secondary alcohols and aldehydes; activated 2-5 fold by fatty acids ddbj/embl/genbank d16511 Registry number: EC 1.1.1.- (26 Jun 1999) |
| pig-jawed | <zoology> Having the upper jaw projecting beyond the lower, with the upper incisors in advance of the lower; said of dogs. Source: Websters Dictionary (01 Mar 1998) |
| pigbel | A type of necrotizing enteritis endemic in the Papua New Guinea highlands caused by the B toxin of Clostridium perfringens type C; occurs predominantly in children because of poor immunity to B toxin and a low level of intestinal proteases resulting from a diet low in protein and high in sweet potatoes. (05 Mar 2000) |
| pigeon | 1. <zoology> Any bird of the order Columbae, of which numerous species occur in nearly all parts of the world. The common domestic pigeon, or dove, was derived from the Old World rock pigeon (Columba livia). It has given rise to numerous very remarkable varieties, such as the carrier, fantail, nun, pouter, tumbler, etc. The common wild pigeons of the Eastern United States are the passenger pigeon, and the Carolina dove. See Passenger, and Dove. See, also, Fruit pigeon, Ground pigeon, Queen pigeon, Stock pigeon, under Fruit, Ground, etc. 2. An unsuspected victim of sharpers; a gull. <zoology> Blue pigeon, any one of the large Asiatic fruit pigeons of the genus Carpophada. <botany> Pigeon berry The upland plover. The golden plover. Origin: F, fr. L. Pipio a young pipping or chirping bird, fr. Pipire to peep, chirp. Cf. Peep to chirp. Source: Websters Dictionary (01 Mar 1998) |
| pigeon breast | Prominence of the breast bone (sternum). Medically, pigeon breast is called pectus carinatum. (12 Dec 1998) |
| pigeon chest | Pigeon-breasted. (12 Dec 1998) |
| pigeon's milk | A secretion formed by glands in the mucosa of the pigeon's crop with which the young are fed; it is increased under the influence of prolactin. Synonym: crop milk. (05 Mar 2000) |
| pigeon-hearted | Timid; easily frightened; chicken-hearted. Source: Websters Dictionary (01 Mar 1998) |
| pigeon-livered | Timid; easily frightened; chicken-hearted. Source: Websters Dictionary (01 Mar 1998) |
| pigeonfoot | <botany> The dove's-foot geranium (Geranium molle). Source: Websters Dictionary (01 Mar 1998) |