Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

trilateral

play
adjective tri·lat·er·al \(ˌ)trī-ˈla-tə-rəl, -ˈla-trəl\

Simple Definition of trilateral

  • : involving three groups or countries

Source: Merriam-Webster's Learner's Dictionary

Full Definition of trilateral

  1. :  having three sides or parties <trilateral business ventures> <trilateral discussions>

Origin and Etymology of trilateral

Latin trilaterus, from tri- + later-, latus side


First Known Use: 1660


Learn More about trilateral


Seen and Heard

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

WORD OF THE DAY

of striking ability or excellence

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

two-chairs-on-a-pier-by-the-ocean-in-summer

Which of the following words means “of or relating to summer”?

estival brumal hiemal vernal
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ