- a noncolored or slightly colored compound that is produced by reducing a dye and is readily oxidized to regenerate the dye.
Origin of leuco base
First recorded in 1885–90; independent use of leuco-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a colourless compound formed by reducing a dye so that the original dye can be regenerated by oxidation