-idene

noun suffix

-i·​dene

əˌdēn

plural -s

: radical having two valence bonds at the point of attachment

ethylidene CH₃CH<

ethidene

compare -ylidene

Word History

Etymology

International Scientific Vocabulary - ide + -ene

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!