Halitherium

noun

Hal·​i·​the·​ri·​um

ˌhaləˈthirēəm

: a genus of sirenians that is known from remains found in the Oligocene and Miocene of southern Europe and the Oligocene of Madagascar and is made type of a separate family or included in Dugongidae

Word History

Etymology

New Latin, from hali- + -therium

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!