ˌpinəˈvərˌdȯl, -dōl noun
( -s )
Etymology: International Scientific Vocabulary pina- (irregular from Greek pinak-, pinax board, tablet, picture) + verd- (from French verd, vert green) + -ol — more at verdure
: an isocyanine dye formerly used in photography as a sensitizer for the green and yellow portions of the spectrum