Webster's Dictionary 1828 - Online Edition

Webster's Dictionary 1828

Americal Dictionary of the English Language

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CONCAVE, adjective [Latin Hollow. See Cave.]

1. Hollow, and arched or rounded, as the inner surface of a spherical body; opposed to convex; as a concave glass.

2. Hollow, in a general sense; as the concave shores of the Tiber.

3. In botany, a concave leaf is one whose edge stands above the disk.

CONCAVE, noun A hollow; an arch, or vault; as the ethereal concave

CONCAVE, verb transitive To make hollow.