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tri•en•ni•al



Pronunciation: (trī-en'ē-ul), [key]
adj.
1. occurring every three years.
2. lasting three years.

n.
1. a third anniversary.
2. something that appears or occurs every three years.
3. a period of three years; triennium.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

trienetriennium
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