CALC- Meaning of CALC- in English 1. a combining form of calcareous: calc-tufa.2. var. of calci- before a vowel: calcic.[ Kalk lime calc- (s. of calx ) lime, limestone; see CALX, CHALK ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012