tu·​ber·​cule | \ ˈt(y)übə(r)ˌkyül\
plural -s

Definition of tubercule

1 : tubercle
2 : a small knob or button of rust formed on the inside of an iron pipe

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!

First Known Use of tubercule

1596, in the meaning defined at sense 1

History and Etymology for tubercule

French, from Latin tuberculum

Keep scrolling for more

Learn More about tubercule

Statistics for tubercule

Look-up Popularity

Time Traveler for tubercule

The first known use of tubercule was in 1596

See more words from the same year

Comments on tubercule

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


to spread over or through

Get Word of the Day daily email!

Test Your Vocabulary

The Exceptions Quiz III

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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!