D defs.my
Entry 1 sense Webster, 1913

Leuco-

/(lū"kō̇-)/ · Leu·co- · IPA
01 pref. A combining form signifying white, colorless; specif. (Chem.), denoting an extensive series of colorless organic compounds, obtained by red…
  1. 1.
    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.(Chem.)