pro·​to·​corm | \ ˈprōtə+ˌ- \

Definition of protocorm

1 : a tuber-shaped body with rhizoids that is produced by the young seedlings of various orchids and some other plants having associated mycorrhizal fungi
2 [prot- + -corm (from New Latin cormus)] : the part of an insect embryo posterior to the protocephalon

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!

Other Words from protocorm

protocormic \ ¦⸗⸗¦kȯrmik \ adjective

History and Etymology for protocorm

International Scientific Vocabulary prot- + corm

Keep scrolling for more

Learn More about protocorm

Statistics for protocorm

Cite this Entry

“Protocorm.” The Dictionary, Merriam-Webster Inc., Accessed 15 December 2019.

Comments on protocorm

What made you want to look up protocorm? Please tell us where you read or heard it (including the quote, if possible).


delight or enjoyment

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!