Etymology

deltidium

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Today it means: The triangular space under the beak of many brachiopod shells. Full definition →

First used 1851New Latin deltidium
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The story

  1. New Latin · borrowed fromdeltidium
  2. English todaydeltidium

Borrowed from New Latin deltidium. By surface analysis, delta + -idium.

First known use, by meaning

  • 1851 The triangular space under the beak of many brachiopod shells.

Etymology from Wiktionary, CC BY-SA 4.0.