1. Mound-like or dome-shaped structures built by organisms (such as corals, algae, or other marine life) in ancient or modern seas, forming a type of biogenic reef.
Usage: geology; paleontology; plural of bioherm

Examples

• Paleontologists discovered ancient bioherms in the limestone formations of the Midwest.
• These bioherms were constructed by colonial corals and calcareous algae millions of years ago.
• The study of bioherms helps scientists understand past marine environments and ecosystems.
• Modern bioherms continue to grow in tropical and subtropical ocean waters.
• Bioherms differ from barrier reefs in their isolated, mound-like structure.