HEXADECIMAL /ˌhɛksəˈdɛsɪməl/ ► audio Scrabble 26 Words With Friends 28 Definition adjective of or pertaining to a number system having 16 as its base. — synonyms: hex See all 326 words you can make from HEXADECIMAL → 11-letter words Words starting with H Words ending with L ← Unscramble different letters