triennially
advEtymology From triennial + -ly.
1
Occurring at intervals three years apart.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
adv
Etymology From triennial + -ly.
Occurring at intervals three years apart.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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