diurnal arc

noun Astronomy.

the portion of the diurnal circle that is above the horizon at a given point.

Nearby words

  1. diu,
  2. diuresis,
  3. diuretic,
  4. diuril,
  5. diurnal,
  6. diurnal circle,
  7. diurnal motion,
  8. diurnal parallax,
  9. diuron,
  10. div

Compare nocturnal arc.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019