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Noun: triennium (triennia,trienniums)
  1. A period of three years

Derived forms: triennia, trienniums

Nearest

Tridacna
Tridacna gigas
Tridacnidae
trident
Tridentine
tridymite
tried
tried and true
triennial
triennially
triennium
trier
trifecta
trifid
trifid beggar-ticks
trifid bur marigold
trifle
trifle away
trifler
trifling
trifluoromethane