Dentalium (dentalium)

[ conchologists it was used for all the Dentaliidæ, or forms with tusk-like shells; but more recently it has been restricted to Dentaliidæ with the posterior end of the tusk like shell furnished with an internal slightly projecting tube provided with a dorsoventrally elongated opening. dental i zati on (den-tal-i-za's hon), n. [ The latter [Sanskrit k or c), usually designated by k2 (or q), is frequently liable to labialization (or dental i zati on ) in Encyc. Brit ., XXI. 270. Greek.