Synonyms for Triennium:

• n.

  •Other relevant words: (noun)
  • three years.

• Other synonyms:

  •Other relevant words (noun):
  • trefoil,
  • trey,
  • trinity,
  • trivet,
  • triad,
  • ternary,
  • threesome,
  • triumvirate,
  • trireme,
  • clover,
  • trident,
  • triangle,
  • Trinomial,
  • triplet,
  • leash,
  • Trihedron,
  • trimester,
  • trio,
  • Triskelion,
  • troika,
  • tierce,
  • shamrock,
  • three,
  • triptych,
  • trilogy.