different between colouring vs heliochromism

colouring

English

Pronunciation

Noun

colouring (countable and uncountable, plural colourings)

  1. (Britain, Canada) Alternative spelling of coloring

Verb

colouring

  1. present participle of colour

colouring From the web:

  • what colouring am i
  • what colouring to use for bath bombs
  • what colouring pencils are best
  • what colouring to use for soap making
  • what colour personality am i


heliochromism

English

Noun

heliochromism (uncountable)

  1. (physics, chemistry) The property of certain photochromic materials of colouring in near-ultraviolet light and then fading in its absence; they are used in the lenses of sunglasses

heliochromism From the web:

  • what does heliochrome mean
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