Definition of monodon in US English:

monodon

noun

Zoology
  • Originally: the narwhal, Monodon monoceros. Now (in form Monodon): the monotypic genus (family Monodontidae) that comprises the narwhal.

Origin

Mid 18th century; earliest use found in John Hill (bap. 1714, d. 1775), physician and actor. From scientific Latin monodon from mono- + -odon, after ancient Greek μονοδοντ-, μονόδους having one tooth.