Etiolin
Pronunciation : E"ti*o*lin
Part of Speech : n.
Etymology : [See Etiolate.] (Bot.)
Definition : Defn: A yellowish coloring matter found in plants grown in darkness, which is supposed to be an antecedent condition of chlorophyll. Encyc. Brit.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder