Numbers: tri (three)

Learn this list of words derived from tri meaning "three."
12 words 24 learners

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Full list of words from this list:

words only definitions & notes
  1. triple
    having three units or components or elements
  2. triangle
    a three-sided polygon
  3. trio
    a set of three similar things considered as a unit
  4. tripod
    a three-legged rack used for support
  5. triathlon
    an athletic contest consisting of three different events
  6. trilogy
    a set of three literary or dramatic works related in subject
  7. triad
    a set of three similar things considered as a unit
  8. trident
    a spear with three prongs
  9. triplet
    one of three siblings born at the same time
  10. trigonometry
    the mathematics of three-sided figures and their functions
  11. trinity
    three people or things considered as a unit
  12. trimester
    a period of three months
Created on Mon Feb 09 14:56:23 EST 2026 (updated Fri Mar 20 16:03:37 EDT 2026)

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