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Tri•dac•na



Pronunciation: (tri-dak'nu), [key]
n.
a genus of giant clams inhabiting reefs in the South Pacific, attaining a diameter of 4 ft. (1.2 m) or more, and weighing over 500 lb. (227 kg).

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

tridtridactyl
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