- The definition of solstice is the time when the sun reaches its highest or lowest point at noon, resulting in the shortest and longest days of the year.
The longest day of the year is an example of the summer solstice.
- the moment or date when the sun in its apparent annual movement along the ecliptic reaches its maximum distance north or south of the celestial equator: in the Northern Hemisphere, the day of the (about June 21, marking the beginning of summer) is the time of the sun's maximum elevation and, thus, has the longest period of sunlight; the day of the (about Dec. 21, marking the beginning of winter) is the time of the sun's minimum elevation and, thus, has the shortest period of sunlight
- either of the two points on the celestial sphere where the sun's path reaches its maximum distance north or south of the celestial equator
Origin of solsticeMiddle English ; from Middle French ; from Classical Latin solstitium ; from sol, the sun (see Sol) + sistere, causative of stare, to stand
Either of two times of the year when the sun is at its greatest angular distance from the celestial equator. The summer solstice in the Northern Hemisphere occurs about June 21, when the sun is at the zenith on the Tropic of Cancer; the winter solstice occurs about December 21, when the sun is at zenith on the Tropic of Capricorn. The summer solstice is the longest day of the year; the winter solstice is the shortest.
Origin of solsticeMiddle English, from Old French, from Latin sōlstitium : sōl, sun; see sāwel- in Indo-European roots + -stitium, a stoppage; see stā- in Indo-European roots.