| pyaemia | <microbiology> The invasion of bloodstream by pyogenic organisms. Origin: Gr. Haima = blood (18 Nov 1997) |
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| pyaemic | Relating to or suffering from pyaemia. (05 Mar 2000) |
| pyaemic abscess | A haematogenous abscess resulting from pyaemia, septicaemia, or bacteraemia. Synonym: septicaemic abscess. (05 Mar 2000) |
| pyaemic embolism | Plugging of an artery by an embolus detached from a suppurating thrombus. Synonym: infective embolism. (05 Mar 2000) |
| pyarthrosis | Synonym: suppurative arthritis. Origin: G. Pyon, pus, + arthrosis, a jointing (05 Mar 2000) |
| pycnaspidean | <ornithology, zoology> Having the posterior side of the tarsus covered with small irregular scales; said of certain birds. Origin: Gr. Thick, crowded +, a shield. Source: Websters Dictionary (01 Mar 1998) |
| pycnidium | <plant biology> The male producing body of a rust. (09 Oct 1997) |
| pycnite | <chemical> A massive subcolumnar variety of topaz. Origin: Gr. Thick. Source: Websters Dictionary (01 Mar 1998) |
| pycno- | See: pykno-. (05 Mar 2000) |
| pycnodont | <paleontology> Any fossil fish belonging to the Pycnodontini. They have numerous round, flat teeth, adapted for crushing. Origin: Gr. Thick, crowded +, a tooth. Source: Websters Dictionary (01 Mar 1998) |
| pycnodontini | <zoology> An extinct order of ganoid fishes. They had a compressed body, covered with dermal ribs (pleurolepida) and with enameled rhomboidal scales. Source: Websters Dictionary (01 Mar 1998) |
| pycnodysostosis | An inherited disorder of the bone. That causes short stature and abnormally dense brittle bones. Due to a defect in an enzyme: cathepsin k. The french artist toulouse-lautrec is thought to have pycnodysostosis. Also spelled pyknodysostosis with a k. (12 Dec 1998) |
| pycnogonid | <zoology> One of the Pycnogonida. Source: Websters Dictionary (01 Mar 1998) |
| pycnogonida | <zoology> A class of marine arthropods in which the body is small and thin, and the eight legs usually very long. Synonym: Pantopoda. The abdomen is rudimentary, and the triangular mouth is at the end of a tubular proboscis. Many of them live at great depths in the sea, and the largest of them measure two feet across the extended legs. Origin: NL, fr. Gr. Thick crowded + knee. Source: Websters Dictionary (01 Mar 1998) |
| pycnometer | <physics> A specific gravity bottle; a standard flask for measuring and comparing the densities of liquids. [Also written pyknometer. Origin: Gr. Dense, compact. Source: Websters Dictionary (01 Mar 1998) |