Am'mite, n.

noun

n. [Gr. ἀμμίτης, ἀμμίτις, sandstone, from ἄμμος, sand.] (Geol.) A rock consisting of small concretions like grains of sand or roe of fish in size. It is the roe-stone or oölite of recent authors;—written also ham'mite. Dana.