a hydrous potassium and calcium silicate mineral occurring in white crystals.
apophyllite, a species of mineral of a foliated structure and pearly lustre, called also fish-eye stone.
The New Gresham Encyclopedia. Vol. 1 Part 2 Various
apophyllite always occurs as distinct crystals, which belong to the tetragonal system.
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 Various
a white, colourless, pink, or green mineral consisting of a hydrated silicate of calcium, potassium, and fluorine in tetragonal crystalline form. It occurs in cracks in volcanic rocks. Formula: KCa4(Si4O10)2(OH1F).8H2O
Anatomy, Botany. an outgrowth; process; projection or protuberance. Architecture, . Historical Examples apophysis, any irregular swelling; the enlargement at the base of the spore-case of the Umbrella-Moss. The Elements of Botany Asa Gray No ctenidium, but a pulmonary cavity; operculum with an apophysis. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 Various The central region […]
Anatomy, Botany. an outgrowth; process; projection or protuberance. Architecture, . noun (pl) -ses (-ˌsiːz) a process, outgrowth, or swelling from part of an animal or plant (geology) a tapering offshoot from a larger igneous intrusive mass apophysis a·poph·y·sis (ə-pŏf’ĭ-sĭs) n. pl. a·poph·y·ses (-sēz’) An outgrowth or projection of an organ or part, especially an outgrowth […]
apophysitis apophysitis a·poph·y·si·tis (ə-pŏf’ĭ-sī’tĭs) n. Inflammation of an apophysis.
noun (botany) the nonprotoplasmic component of a plant, including the cell walls and intercellular material