CYAN- Meaning of CYAN- in English [cyan-] or cyano- comb form [G, fr. Gk kyan-, kyano-, fr. kyanos dark blue enamel] 1: dark blue: blue "cyanobacterium" 2: cyanogen "cyanide" 3: cyanide "cyanogenetic" Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012