adv ·Rare ·Advanced level

Definitions

Adverb

1. 1
   As part of a centennial. not-comparable
2. 2
   once a century, every one hundred years not-comparable

Adverb

1. 1
   every hundred years; once in a century wordnet

Etymology

From centennial + -ly.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.