[pawr-uh s, pohr-] /ˈpɔr əs, ˈpoʊr-/
full of .
permeable by water, air, etc.
permeable to water, air, or other fluids
(biology, geology) having pores; poriferous
easy to cross or penetrate: the porous border into Thailand, the most porous defence in the league
late 14c., “full of pores,” from Old French poros (14c., Modern French poreux), from Medieval Latin porosus; or directly from Latin porus “an opening” (see pore (n.)). Figurative use from 1640s.
porous po·rous (pôr’əs)
Having many pores or other small spaces that can hold a gas or liquid or allow it to pass through.
porphobilin por·pho·bi·lin (pôr’fō-bī’lĭn) n. An intermediate in the synthesis of porphyrins and heme.
- Porphyria cutanea tarda
porphyria cutanea tarda porphyria cu·ta·ne·a tar·da (kyōō-tā’nē-ə târ’də) n. Abbr. PCT Porphyria characterized by liver dysfunction and photosensitive cutaneous lesions, with hyperpigmentation and scleroderma-like changes in skin, neurologic manifestations, and porphyrinuria. Also called symptomatic porphyria.
[pawr-fuh-rin] /ˈpɔr fə rɪn/ noun, Biochemistry. 1. a dark red, photosensitive pigment consisting of four pyrrole rings linked by single carbon atoms: a component of chlorophyll, heme, and vitamin B 1 2 . /ˈpɔːfɪrɪn/ noun 1. any of a group of pigments occurring widely in animal and plant tissues and having a heterocyclic structure formed […]
porphyrinogen por·phy·rin·o·gen (pôr’fə-rĭn’ə-jən, -jěn’) n. Any of the intermediates in the biosynthesis of heme.