any of various low-growing plants of the genus Cerastium, having leaves covered with whitish or grayish down and small white flowers, and including mouse-ear chickweed and snow-in-summer.
Origin: < NL (Linnaeus) < Gk kerást(ēs) horned (see cerastes) + NL -ium-ium; so called from the horn-shaped seed capsules of some species
[suh-ras-tee-uh
m] 