| pelecypoda | <zoology> Same as Lamellibranchia. Origin: NL, fr. Gr. A hatchet + -poda. Source: Websters Dictionary (01 Mar 1998) |
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| pelerine | A woman's cape; especially, a fur cape that is longer in front than behind. Origin: F. Pelerine a tippet, fr. Pelerin a pilgrim, fr. L. Peregrinus foreign, alien. See Pilgrim. Source: Websters Dictionary (01 Mar 1998) |
| pelfish | Of or pertaining to pelf. Source: Websters Dictionary (01 Mar 1998) |
| Pelger, Karel | <person> Dutch physician, 1885-1931. See: Pelger-Huet nuclear anomaly. (05 Mar 2000) |
| pelger-huet anomaly | An inherited defect interfering with normal nuclear lobulation of neutrophils and eosinophils. The nuclei appear rodlike, spherical, or dumbbell-shaped and their structure is coarse and lumpy. (12 Dec 1998) |
| Pelger-Huet nuclear anomaly | Congenital inhibition of lobulation in the nuclei of neutrophilic leukocytes; most cells present band or bilobulate appearance, and only an occasional cell is trilobed; it is not associated with disease, but may be confused with leukocyte "shift to left"; autosomal dominant inheritance. (05 Mar 2000) |
| pelican | 1. <zoology> Any large webfooted bird of the genus of Pelecanus, of which about a dozen species are known. They have an enormous bill, to the lower edge of which is attached a pouch in which captured fishes are temporarily stored. The American white pelican (Pelecanus erythrorhynchos) and the brown species (P. Fuscus) are abundant on the Florida coast in winter, but breed about the lakes in the Rocky Mountains and British America. 2. <chemistry> A retort or still having a curved tube or tubes leading back from the head to the body for continuous condensation and redistillation. The principle is still employed in certain modern forms of distilling apparatus. <zoology> Frigate pelican, deep-sea fish (Eurypharynx pelecanoides) of the order Lyomeri, remarkable for the enormous development of the jaws, which support a large gular pouch. <botany> Pelican flower, a marine gastropod shell of the genus Aporrhais, especially. Aporrhais pes-pelicani of Europe. Origin: F. Pelican, L. Pelicanus, pelecanus, Gr, the woodpecker, and also a water bird of the pelican kind, fr. To hew with an ax, akin to Skr. Paracu Alternative forms: pelecan. Source: Websters Dictionary (01 Mar 1998) |
| pelick | <zoology> The American coot (Fulica). Source: Websters Dictionary (01 Mar 1998) |
| pelicosauria | <paleontology> A suborder of Theromorpha, including terrestrial reptiles from the Permian formation. Origin: NL, fr. Gr. A wooden bowl (but taken to mean, pelvis) + a lizard. Source: Websters Dictionary (01 Mar 1998) |
| pelidnoma | A circumscribed, elevated, livid patch on the skin. Synonym: pelioma. Origin: G. Pelidnos, livid, + -oma, tumour (05 Mar 2000) |
| peliom | <chemical> A variety of iolite, of a smoky blue colour; pelioma. See: Pelioma. Source: Websters Dictionary (01 Mar 1998) |
| pelioma | 1. <medicine> A livid ecchymosis. 2. <chemical> See Peliom. Origin: NL, fr. Gr, fr. Livid. Source: Websters Dictionary (01 Mar 1998) |
| peliosis | <clinical sign, dermatology> A small haemorrhage (up to about 1 cm in diameter) in the skin, mucous membrane or serosal surface, which may be caused by various factors, including blood disorders, vascular abnormalities and trauma. Purpuric lesions may be associated with inflammation, in which case they present as papular purpura or the haemorrhage may not be accompanied by inflammation, in which case they are macular. The term also comprises a group of haemorrhagic diseases characterised by the presence of purpuric lesions, ecchymoses and a tendency to bruise easily, which may be caused by decreased platelet counts, the presence of abnormal platelets, vascular defects or reactions to certain drugs. (15 Dec 1997) |
| peliosis hepatis | <radiology> Benign, intrahepatic vascular disorder, associated with benign and malignant liver tumours, possible vasodilatory response to sex hormones, (?) clinical significance, multiple endothelium-lined, blood-filled spaces, communicate with sinusoids, angio (parenchymal phase): multiple round collections of contrast in liver (3 - 15 mm), Differential diagnosis: focal nodular hyperplasia, hypervascular metastasis, cavernous haemangiomata (12 Dec 1998) |
| peliosis hepatitis | A rare condition in which the liver contains very numerous small blood-filled spaces, sometimes lined with endothelium; it may be found incidentally or rupture may cause intraperitoneal haemorrhage. (05 Mar 2000) |