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giant clam

[ jahy-uhnt klam ]
/ ˈdʒaɪ ənt ˈklæm /
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noun
any of several huge clams of the family Tridacnidae, inhabiting the shallow waters of coral reefs in the tropical Indo-Pacific, including Tridacna squamosa(fluted giant clam ), a relatively hardy but conservation dependent species that grows to about 16 inches (40 centimeters) across.
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Origin of giant clam

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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