onc-

combining form

variants or onco- or less commonly onch- or oncho- or onci-

1

: barb : hook

Oncorhynchus

Oncidium

onchium

Onchocerca

2

: barbed

Oncicola

Word History

Etymology

New Latin, from Greek onkos barbed hook

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!