Leuco- \Leu"co-\ (l[=u]"k[-o]-), Leuc- \Leuc-\ (l[=u]k-). [Gr.
leyko`s white.]
A combining form signifying white, colorless; specif.
(Chem.), denoting an extensive series of colorless organic
compounds, obtained by reduction from certain other colored
compounds; as, leucaniline, leucaurin, etc.
Source: Webster's Revised Unabridged Dictionary (1913)
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