/ Dictionary / Index N neocyanine: Meaning and Definition of Find definitions for: ne•o•cy•a•nine Pronunciation: (nē"ō-sī'u-nēn", -nin), [key] — n. a dye used to make photographic emulsions sensitive to infrared radiation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. neocortex neo-dada Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language