leuC
Leuc is not a standalone entry in most dictionaries; it is best understood as a morpheme, a combining form derived from the Greek leukos, meaning “white.” It is used across several scientific fields to indicate whiteness or light coloration in the concepts to which it is attached.
In biology and medicine, leuc- appears in terms describing white blood cells and related conditions: leucocyte
In geology and mineralogy, leuc- denotes light-colored materials. Leucite is a white potassium aluminum silicate mineral;
Notes: When encountered, leuc- typically appears as part of longer terms rather than as a stand-alone word.