| NOUN | phenomenon | solar parallax | the angle subtended by the mean equatorial radius of the Earth at a distance of one astronomical unit |
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| Meaning | The angle subtended by the mean equatorial radius of the Earth at a distance of one astronomical unit. | |
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| Broader | geocentric parallax, diurnal parallax | The parallax of a celestial body using two points on the surface of the earth as the earth rotates |
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