| pycno- | See: pykno-. (05 Mar 2000) |
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| 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) |
| pycno | a form of dwarfism accompanied by fragile bones and bad teeth |
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| pycno | any of various small spider-like marine arthropods having small thin bodies and long slender legs |
| pycno | sea spiders |
| pycno | a degenerative state of the cell nucleus |
| pycno | of or relating to or exhibiting pyknosis |
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