giant clam


noun

any of several huge clams of the family Tridacnidae, inhabiting the shallow waters of coral reefs in the tropical Indo-Pacific, as Tridacna gigas: some may weigh more than 500 pounds (225 kg).

Nearby words

  1. giant cell myeloma,
  2. giant cell pneumonia,
  3. giant cell sarcoma,
  4. giant cell tumor of bone,
  5. giant cell tumor of tendon sheath,
  6. giant condyloma,
  7. giant crab,
  8. giant fennel,
  9. giant garlic,
  10. giant granadilla

Origin of giant clam

First recorded in 1945–50

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019