D defs.my
Entry 1 sense Webster, 1913

Elasmosaurus

· E·las·mo·sau·rus · IPA
01 n. An extinct, long-necked, marine, cretaceous reptile from Kansas, allied to Plesiosaurus.
  1. 1.
    An extinct, long-necked, marine, cretaceous reptile from Kansas, allied to Plesiosaurus.(Paleon.)