noun \ˈsäl-stəs, ˈsōl-, ˈsl-\

: one of the two times during the year when the sun is farthest north or south of the equator

Full Definition of SOLSTICE

:  either of the two points on the ecliptic at which its distance from the celestial equator is greatest and which is reached by the sun each year about June 22 and December 22
:  the time of the sun's passing a solstice which occurs about June 22 to begin summer in the northern hemisphere and about December 22 to begin winter in the northern hemisphere

Origin of SOLSTICE

Middle English, from Latin solstitium, from sol sun + -stit-, -stes standing; akin to Latin stare to stand — more at solar, stand
First Known Use: 13th century

Other Astronomy Terms

gibbous, nadir, nebulous, penumbra, retrograde, sidereal, syzygy, wane, wax, zenith


noun    (Concise Encyclopedia)

Either of the two moments in the year when the Sun's apparent path is farthest north or south from Earth's Equator; also, either of the two points along the ecliptic that the Sun passes through at these times. In the Northern Hemisphere the summer solstice occurs on June 21 or 22; the winter solstice on December 21 or 22. In the Southern Hemisphere the seasons are reversed. See also equinox.


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