proembryo

noun

pro·​embryo

(ˈ)prō+

: an embryonic structure developed during the segmentation of the egg or oospore before the formation of the true embryo

proembryonal

"+

adjective

proembryonic

(¦)prō+

adjective

Word History

Etymology

pro- entry 1 + embryo

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!