| pyknic | Denoting a constitutional body type characterised by well rounded external contours and ample body cavities; virtually synonymous with endomorphic. Origin: G. Pyknos, thick (05 Mar 2000) |
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| pykno- | Thick, dense, compact. Origin: G. Pyknos (05 Mar 2000) |
| pyknodysostosis | <radiology> Autosomal recessive, dense, sclerotic bones [Cf: osteopetrosis (sporadic, not inherited)] Features: open cranial sutures and fontanelles, Wormian bones, dolichocephaly, sclerotic vertebrae, fractured long bones, short, stubby hands, partial agenesis/aplasia of terminal phalanges [simulates acro-osteolysis] (12 Dec 1998) |
| pyknoepilepsy | An obsolete terms for absence. Origin: pykno-+ G. Lepsis, seizure. (05 Mar 2000) |
| pyknolepsy | A generalised epilepsy syndrome characterised by the onset of absence seizures in childhood, typically at age six or seven years. There is a strong genetic predisposition and girls are affected more often than boys. EEG reveals generalised 3 Hz spike-wave activity on a normal background. Prognosis for remission is good if the patient does not also have generalised tonic-clonic seizures. See: absence. Synonym: petit mal epilepsy, pyknolepsy. (05 Mar 2000) |
| pyknomorphous | Denoting a cell or tissue that stains deeply because the stainable material is closely packed. Origin: pykno-+ G. Morphe, form, shape (05 Mar 2000) |
| pyknophrasia | Thickness of utterance. Origin: pykno-+ G. Phrasis, speech (05 Mar 2000) |
| pyknosis | <cell biology> Contraction of nuclear contents to a deep staining irregular mass, sign of cell death. (18 Nov 1997) |
| pyknotic | Relating to or characterised by pyknosis. (05 Mar 2000) |