equilux

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English[edit]

Etymology[edit]

equi- +‎ Latin lux (“light”).

Noun[edit]

equilux (plural equiluxes)

  1. An isophot.
  2. A day in which the durations of light and darkness are equal, contrasted with an equinox, where they may differ slightly due to the angular diameter of the sun and atmospheric refraction.
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