Tridacna definitions

Tridacna

1) Genus tridacna 2) Mollusk genus
Found on https://www.crosswordclues.com/clue/tridacna

Tridacna is a genus of large saltwater clams, marine bivalve mollusks in the subfamily Tridacninae, the giant clams. They have heavy shells, fluted with 4 to 6 folds. The mantle is brightly coloured. They inhabit shallow waters of coral reefs in warm seas of the Indo-Pacific region. These clams are popular in marine aquaria, and in some areas, suc...
Found on http://en.wikipedia.org/wiki/Tridacna

Tridacna

• (n.) A genus of very large marine bivalve shells found on the coral reefs of the Indian and Pacific Oceans. One species (T. gigas) often weighs four or five hundred pounds, and is sometimes used for baptismal fonts. Called also paw shell, and fountain shell.
Found on http://thinkexist.com/dictionary/meaning/tridacna/

tridacna

<zoology> A genus of very large marine bivalve shells found on the coral reefs of the Indian and Pacific Oceans. One species (T. Gigas) often weighs four or five hundred pounds, and is sometimes used for baptismal fonts. ... Synonym: paw shell, and fountain shell. ... Origin: L, pl, a kind of oysters, fr. Gr. Eaten at three bites, tri- + to b...
Found on http://www.encyclo.co.uk/local/20973