معنی کلمه :‌ copepoda

An order of Entomostraca, including many minute Crustacea, both fresh-water and marine.

A metallic element found in certain rare minerals, as thorite, pyrochlore, monazite, etc., and isolated as an infusible gray metallic powder which burns in the air and forms thoria; -- formerly called also thorinum. Symbol Th. Atomic weight 232.0.