BICENTENARY ► audio Scrabble 18 Words With Friends 21 Definition adjective of or relating to or completing a period of 200 years. — synonyms: bicentennial noun the 200th anniversary (or the celebration of it). — synonyms: bicentennial See all 455 words you can make from BICENTENARY → 11-letter words Words starting with B Words ending with Y ← Unscramble different letters