A genus of bivalve molluscs, including the Tridacna gigas or Giant Clam, the largest bivalve shell known. Also attributive.
| 单词 | θ33169 | 
| 释义 | the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Pelecypoda or Conchifera > 			[noun]		 > section Siphonida > integro-pallialia > family Tridacnidae (3)		 Tridacna1776 A genus of bivalve molluscs, including the Tridacna gigas or Giant Clam, the largest bivalve shell known. Also attributive. clamp-shell1835 Usually clamp-shell n. the large bivalve shell of the tropical molluscs Chama and Tridacna (family Chamaceæ). taclobo1885 A bivalve mollusc, of great size, the Giant Clam (Tridacna gigas) of the Indian and China seas.  | 
	
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