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Ancient Greek, meaning "great mouth".


megastome (plural megastomes)

  1. (zoology) One of a group of univalve shells, having a large aperture or mouth.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.