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

triad

play
noun tri·ad \ˈtrī-ˌad also -əd\

Simple Definition of triad

  • : a group of three usually related people or things

  • : a secret Chinese criminal organization

Source: Merriam-Webster's Learner's Dictionary

Full Definition of triad

  1. 1 :  a union or group of three :  trinity

  2. 2 :  a chord of three tones consisting of a root with its third and fifth and constituting the harmonic basis of tonal music

triadic

play \trī-ˈa-dik\ adjective

triadically

play \-di-k(ə-)lē\ adverb

Examples of triad in a sentence

  1. <a triad of candlesticks on the mantle>



Origin and Etymology of triad

Latin triad-, trias, from Greek, from treis three


First Known Use: 1546


TRIAD Defined for Kids

triad

play
noun tri·ad \ˈtrī-ˌad\

Definition of triad for Students

  1. :  a chord made up usually of the first, third, and fifth notes of a scale




Medical Dictionary

triad

play
noun tri·ad \ˈtrī-ˌad also -əd\

Medical Definition of triad

  1. 1:  a union or group of three <a triad of symptoms>

  2. 2:  a trivalent element, atom, or radical

triadic

\trī-ˈad-ik\play adjective




Seen and Heard

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

WORD OF THE DAY

to criticize in a loud and angry way

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

confounded-person

Which is a synonym of indolent?

philistine frenetic lazy melancholy
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