Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Any member of the genus Tridacna of large saltwater clams with heavy fluted shells.

Etymologies

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Examples

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  • "Or they may be beset by monsters from the deep: enormous octopuses, murderous billfish, giant tridacnas."

    Sea People by Christina Thompson, p 162

    January 4, 2026