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mean sun

noun

Definition of mean sun

: 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

Examples of mean sun in a Sentence

Recent Examples on the Web

 This meant Sun, who had initially finished second, was moved into first place. — Ben Church, CNN, "Controversial swimming star Sun Yang reacts angrily after opponent refuses to share podium," 23 July 2019

First Known Use of mean sun

1765, in the meaning defined above

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