- a reeflike mass or mound of limestone built by sedentary organisms, as corals
- coral reef
Origin of biohermfrom bio- + Classical Greek herma, a reef
A massive, usually mound-shaped structure found in sedimentary rock strata, produced by the accretion of organic carbonate by a variety of marine invertebrates, such as corals and mollusks, and algae.
Origin of biohermbio- Greek herma sunken rock, reef ( of unknown origin )
bio- + herm