Macrobrachium

noun

Mac·​ro·​brachium

¦makrō+

: a genus of large stout chiefly tropical shrimps including one (M. jamaicenœ) that occurs in freshwaters of Florida and the Gulf coast to Brazil and sometimes attains a length of 17 inches and a weight of over 3 pounds

Word History

Etymology

New Latin, from macr- + brachium

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!