Leptostraca

plural noun

Lep·​tos·​tra·​ca

lepˈtästrəkə

: a division of Malacostraca including the Phyllocarida, the Nebaliacea, and various fossil forms that are regarded as intermediate between the typical malacostracans and the lower crustaceans although classed among the former see nebalia

leptostracan

(ˈ)⸗¦⸗⸗kən

adjective or noun

leptostracous

(ˈ)⸗¦⸗⸗kəs

adjective

Word History

Etymology

New Latin, from lept- + -ostraca

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!