What is (a) The anterior rib in the wing of an insect. (b) One of the riblike longitudinal ridges on the exterior of many corals called?
costa — (Zoöl.) (a) The anterior rib in the wing of an insect. (b) One of the riblike longitudinal ridges on the exterior of many corals. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00