'Elasmosaurus' definitions:

Definition of 'Elasmosaurus'

From: GCIDE

Elasmosaurus \E*las`mo*sau"rus\, n. [NL., fr. Gr. ? a metal plate + ? a lizard.] (Paleon.) An extinct, long-necked, marine, cretaceous reptile from Kansas, allied to Plesiosaurus. [1913 Webster]