fluor Meaning, Definition & Usage

  1. noun a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine
    fluorspar; fluorite.

WordNet

Flu"or noun
Etymology
L., a flowing, fr. fluere to flow. See Fluent.
Definitions
  1. A fluid state. Obs. Sir I. Newton.
  2. Menstrual flux; catamenia; menses. Obs.
  3. (Min.) See Fluorite.

Webster 1913