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Definition of photoregulation in US English:

photoregulation

noun

Biology

  • The regulation of a biological or chemical process by means of the intensity, duration, etc., of light.

Origin

1960s; earliest use found in Science. From photo- + regulation [adjective], after photoregulate.

Pronunciation

photoregulation

/ˌfəʊtə(ʊ)ˌrɛɡjʊˈleɪʃn/