| porocephalosis | Infection with a species of the tongue worms Porocephalus. Synonym: porocephalosis. (05 Mar 2000) |
|---|---|
| Porocephalus | A genus of tongue worms of the family Porocephalidae, of which the adult worms or larvae cause porocephaliasis in a number of animal species including humans. Origin: G. Poros, pore, + kephale, head (05 Mar 2000) |
| Porocephalus armillatus | armillifer armillatus |
| poroconidium | In fungi, a conidium produced through the microscopic pore of the condidiophore. Synonym: porospore. (05 Mar 2000) |
| porokeratosis | A rare, chronic, progressive autosomal dominant disorder seen most often in males and usually appearing in early childhood. It is characterised by the formation of slightly atrophic patches surrounded by an elevated, keratotic border. (12 Dec 1998) |
| poroma | 1. Induration following a phlegmon. 2. A tumour of cells lining the skin openings of sweat glands. Synonym: callosity, exostosis. Origin: G. Poroma, callus, fr. Poros, stone (05 Mar 2000) |
| porosis | A porous condition. Synonym: porosity. Origin: L. Porosus, porous (05 Mar 2000) |
| porosity | Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance. (12 Dec 1998) |
| porospore | In fungi, a conidium produced through the microscopic pore of the condidiophore. Synonym: porospore. (05 Mar 2000) |
| porotic | <medicine> A medicine supposed to promote the formation of callus. Origin: Gr. Callus. Source: Websters Dictionary (01 Mar 1998) |
| porous | Full of pores; having interstices in the skin or in the substance of the body; having spiracles or passages for fluids; permeable by liquids; as, a porous skin; porous wood. "The veins of porous earth." Origin: Cf. F. Poreux. See Pore. Source: Websters Dictionary (01 Mar 1998) |
| porous disk | <chemistry> A disk in a tube connecting two different solutions in a voltaic cell that allows ion flow without extensive mixing of the solutions, similar to a salt bridge. (09 Jan 1998) |
| porphin | <protein> A cyclic tetrapyrrole in which the four pyrrole groups are linked by their alpha-carbon atoms via methene (-CH=) bridges, porphin is the partial compund of porphyrins. (14 Oct 1997) |
| porphine | The unsubstituted cyclic tetrapyrrole nucleus that is the basis of the porphyrins. See: porphyrins. Compare: chlorin, phorbin, corrin. Synonym: porphyrin. (05 Mar 2000) |
| porphobilin | General term denoting intermediates between the monopyrrole, porphobilinogen, and the cyclic tetrapyrrole of haem (a porphin derivative). See: bilin. (05 Mar 2000) |