||I`o*nid"i*um (?), n. [NL. Cf. Iodine.] (Bot.) A genus of violaceous
||plants, chiefly found in tropical America, some species of which are
||used as substitutes for ipecacuanha.
||
I"o*qua shell` (?). [From the native name.] (Zoöl.) The shell of a
large Dentalium (D. pretiosum), formerly used as shell money, and for
ornaments, by the Indians of the west coast of North America.