The Collaborative International Dictionary
Leucophyll
Leucophyll \Leu"co*phyll\ (l[=u]"k[-o]*f[i^]l), n. [Leuco- + Gr.
fy`llon a leaf.] (Chem.)
A colorless substance isomeric with chlorophyll, contained in
parts of plants capable of becoming green.
--Watts.
Wiktionary
leucophyll
n. (context chemistry English) A colourless substance, isomeric with chlorophyll, contained in parts of plants capable of becoming green.