MEAN SUN


Meaning of MEAN SUN in English

transcription, транскрипция: [ noun ]

Date: 1765

: a fictitious sun used for timekeeping that moves uniformly along the celestial equator and maintains a constant rate of apparent motion equal to the average rate of apparent motion of the real sun

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.