a compact rock consisting essentially of microcrystalline quartz.
a microcrystalline form of silica usually occurring as bands or layers of pebbles in sedimentary rock. Formula: SiO2. Varieties include flint, lyddite (Lydian stone) Also called hornstone
“flint-like quartz,” 1670s, of unknown origin. Apparently “a local term, which has been taken into geological use” [OED].
A hard, brittle sedimentary rock consisting of microcrystalline quartz. It is often reddish-brown to green but can also occur in a variety of other colors, especially white, pink, brown, or black. Chert often contains impurities such as calcium, iron-oxide, or the remains of silica-rich organisms. It usually occurs as nodules in limestone and dolomite and has curved fractures.
/ˈtʃɜːtsɪ/ noun 1. a town in S England, in N Surrey on the River Thames. Pop: 10 323 (2001)
[cher-uh b] /ˈtʃɛr əb/ noun, plural cherubs for 3, 4; cherubim [cher-uh-bim, -yoo-bim] /ˈtʃɛr ə bɪm, -yʊ bɪm/ (Show IPA), for 1, 2. 1. a celestial being. Gen. 3:24; Ezek. 1, 10. 2. Theology. a member of the second order of angels, often represented as a beautiful rosy-cheeked child with wings. 3. a beautiful or […]
[cher-uh b-fish] /ˈtʃɛr əbˌfɪʃ/ noun, plural cherubfishes (especially collectively) cherubfish. 1. a brilliantly colored butterflyfish, Centropyge argi, found in the West Indies: kept in home aquariums.
[chuh-roo-bik] /tʃəˈru bɪk/ adjective 1. of or having the nature of a , or an angel represented as a rosy-cheeked child with wings; angelic. 2. having a plump, pretty innocence: a cherubic face and a dazzling smile. adj. 1620s, from cherub + -ic. Earlier was cherubical (c.1600).