[paw-ros-i-tee, poh-, puh-] /pɔˈrɒs ɪ ti, poʊ-, pə-/
noun, plural porosities for 2.
the state or quality of being .
Geology, Engineering. the ratio, expressed as a percentage, of the volume of the or interstices of a substance, as a rock or rock stratum, to the total volume of the mass.
noun (pl) -ties
the state or condition of being porous
(geology) the ratio of the volume of space to the total volume of a rock
late 14c., from Old French porosité, from Medieval Latin porositas, from porus (see pore (n.)).
porosity po·ros·i·ty (pə-rŏs’ĭ-tē, pô-)
porotomy po·rot·o·my (pə-rŏt’ə-mē, pô-) n. See meatotomy.
[pawr-uh s, pohr-] /ˈpɔr əs, ˈpoʊr-/ adjective 1. full of . 2. permeable by water, air, etc. /ˈpɔːrəs/ adjective 1. permeable to water, air, or other fluids 2. (biology, geology) having pores; poriferous 3. easy to cross or penetrate: the porous border into Thailand, the most porous defence in the league adj. late 14c., “full […]
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.