GYPSUM

Dictionary of Science, Literature and Art · 1842 · p. 20

(Probably derived from yn, earth, and f^u, I concoct.) Crystals of native sulphate of lime. GYRI (Yunanca köken — orijinale bakınız.), in Mammalogy, the annular series of scales in the tails of certain quadriipeds. [s. 550]