‖Ich′thy‐o‐sau″rus (?), n.; pl.Ichthyosauri (#). [NL., fr. Gr. ιχθὔσ, -ύοσ, a fish + σαυ̑ροσ a lizard.] (Paleon.) An extinct genus of marine reptiles; — so named from their short, biconcave vertebræ, resembling those of fishes. Several species, varying in length from ten to thirty feet, are known from the Liassic, Oölitic, and Cretaceous formations.
Content
Rights and sources
Review source, license and attribution information for this content.
Content
Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.