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{%type%} Definitions

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Short "hint"

n. - A soft mineral that emits light during exposure to an ultraviolet light.

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Usage examples (28)
  • The centers of the fluor-spar cubes become negatively electric by the action of light.
  • The photo-electric excitability of fluor-spar crystals is increased by a moderate heat (80° to 100° C.).
  • Fluorine is frequently met with as calcium fluoride or fluor-spar
  • I know not how many of you may be in the condition of this fluor-spar.
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