CALX /kælks/ Scrabble 13 Words With Friends 15 Definition noun a white crystalline oxide used in the production of calcium hydroxide. — synonyms: calcium_oxide, quicklime, lime, calcined_lime, fluxing_lime, unslaked_lime, burnt_lime See all 6 words you can make from CALX → 4-letter words Words starting with C Words ending with X ← Unscramble different letters