Full Definition of FACET. 1. : a small plane surface (as on a cut gem) â see brilliant illustration. 2. : any of the definable aspects that make up a subject (as of contemplation) or an object (as of consideration). 3. : the external corneal surface of an ommatidium.
Definition of cyanide. 1  1 : a compound of cyanogen with a more electropositive element or group: such asa : potassium cyanideb : sodium cyanide. 2  2 : cyanogen 1.
â¢ CYAN (noun). The noun CYAN has 1 sense: 1. one of the primary pigments; has a blue-green color. Familiarity information: CYAN used as a noun is very rare. â¢ CYAN (adjective). The adjective CYAN has 1 sense: 1. of a bluish shade of green. Familiarity information: CYAN used as an adjective is very rare. CYAN (noun). The noun CYAN has 1 sense: 1. one of the primary pigments; has a blue-green color. Familiarity information: CYAN used as a noun is very rare. â¢ CYAN (adjective). The adjective CYAN has 1 sense: 1. of a bluish shade of green. Familiarity information: CYAN used as an adjective is very rare.