SINCE 1828
dictionary
thesaurus

intra-

prefix
Save Word
in·​tra- | \ ˈin-trə, -(ˌ)trä \

Definition of intra-

1a : within intragalactic
b : during intraday
c : between layers of intradermal
2 : intro- an intramuscular injection

History and Etymology for intra-

Late Latin, from Latin intra, from Old Latin *interus, adjective, inward — more at interior

Learn More About intra-

Dictionary Entries Near intra-

intr

intra-

intra-arterial

See More Nearby Entries 

Statistics for intra-

Cite this Entry

“Intra-.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/intra-. Accessed 3 Jul. 2022.

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

More Definitions for intra-

intra-

prefix

Legal Definition of intra-

1 : within intrastate
2 : during intraday

More from Merriam-Webster on intra-

Britannica English: Translation of intra- for Arabic Speakers

WORD OF THE DAY

teem

Listen to the pronunciation of teem

See Definitions and Examples »

Test Your Vocabulary

Great Words for Scrabble

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

Words at Play
Ask the Editors
Word Games