odontocete

from The Collaborative International Dictionary of English v.0.48

Odontocete \O*don`to*ce"te\ ([-o]*d[o^]n`t[-o]*s[=e]"t[-e]), n.
   pl. [NL., from Gr. 'odoy`s, 'odo`ntos, a tooth + kh^tos a
   whale.] (Zool.)
   A subdivision of Cetacea, including the sperm whale,
   dolphins, etc.; the toothed whales.
   [1913 Webster]