Tribulus

noun
Trib·​u·​lus | \ ˈtribyələs \

Definition of Tribulus

: a genus of chiefly tropical or subtropical herbs (family Zygophyllaceae) introduced into North America with pinnate leaves and yellow or white flowers succeeded by a spiny or prickly fruit of five indehiscent tuberculate carpels — see burnut, caltrop sense 1b, puncture vine

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!

History and Etymology for Tribulus

New Latin, from Latin, caltrop, from Greek tribolos, any of various prickly plants, threshing board studded with spikes; akin to Latin tribulum threshing board

Learn More About Tribulus

Dictionary Entries Near Tribulus

tribulation

Tribulus

tribuna

See More Nearby Entries 

Statistics for Tribulus

Cite this Entry

“Tribulus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Tribulus. Accessed 25 Jun. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

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