The Collaborative International Dictionary of English v.0.48:

Denticete \Den`ti*ce"te\, n. pl. [NL., fr. L. dens, dentis,
   tooth + cetus, pl. cete, whale, Gr. ?.] (Zool.)
   The division of Cetacea in which the teeth are developed,
   including the sperm whale, dolphins, etc.
   [1913 Webster]