Ichthyosauridae

plural noun

Ich·​thyo·​sau·​ri·​dae

: a family of ichthyosaurs widely distributed in Jurassic and Cretaceous rocks of both hemispheres see ichthyosaurus

Word History

Etymology

New Latin, from Ichthyosaurus, type genus + -idae

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now