| 单词 | Tridacna |
| 释义 | Tridacna /tri dak"neuh/, 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). [1770-80; < NL, n. use of fem. of L tridacnus requiring three bites < Gk trídaknos, equiv. to tri- TRI- + dákn(ein) to bite + -os adj. suffix] |
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