1) Dye 
Cyanine is a non-systematic name of a synthetic dye family belonging to polymethine group. The word cyanin is from the English word `cyan`, which conventionally means a shade of blue-green (close to `aqua`) and is derived from the Greek `kyanos` which means a somewhat different color: `dark blue`. Cyanines were and are still used in indu...
• (n.) One of a series of artificial blue or red dyes obtained from quinoline and lepidine and used in calico printing.
Cy'a·nine noun (Chemistry) One of a series of artificial blue or red dyes obtained from quinoline and lepidine and used in calico printing. 
Cyanine is one of a series of artificial red or blue dyes obtained from quinoline and lepidine and used in calico printing.
any of several groups of dyes that make silver halide photographic plates sensitive to a wider color range.