Definition of bioherm in English:

bioherm

noun

Geology
  • A deposit consisting of the calcareous skeletal remains of corals or other sedentary organisms, specifically one in the shape of a mound or dome.

Origin

1920s. From bio- + ancient Greek ἕρμα sunken rock, reef (of unknown origin): compare quot. 1928.

Pronunciation

bioherm

/ˈbʌɪəʊˌhəːm/