Search Dictionary
Definition of protrusion

protrusion

/proʊˈtruː.ʒən/
pro · tru · sion
Adverb:protrusively
•
Plural:protrusions
•
Adjective:protrusive
JUMP TO:

protrusion Lexical Profile

protrusion Game Scores & Validity

• noun

1

Something that sticks out, bulges, or projects beyond an adjacent surface.

Example

"The geologist examined a rocky protrusion jutting out from the side of the canyon wall."

2

The action of sticking out or the state of being thrust forward (especially of an anatomical organ, disc, or structure displaced beyond its normal boundaries).

Example

"The MRI scan revealed a mild disc protrusion in the lower lumbar spine."

Synonyms
View all synonyms for protrusion
Antonyms
View all antonyms for protrusion

• Rhymes for protrusion

• Nearby Words

protraction
protractor
protrude
protrusion
protrusiveness
protuberance
proud

Word Origin & Etymology

Borrowed in the mid-17th century from French or Medieval Latin protrusio, derived from the Latin verb protrudere ('to thrust forward'), from pro- ('forward') and trudere ('to push, thrust').

Cite this Entry

Wordmom. (2026). Definition of Protrusion. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/protrusion
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.