solstice

n. either of the two times of the year when the sun is farthest from the equator (Astronomy)

A solstice occurs twice a year, whenever Earth's axis tilts the most toward or away from the Sun, causing the Sun to be farthest north or south at noon. The name is derived from Latin sol (sun) and sistere (to stand still), because at the solstice, the Sun stands still in declination, that is, its movement north or south is minimal. The term solstice can also be used in a wider sense as the date (day) that such a passage happens. The solstices, together with the equinoxes, are related to the seasons. In some languages they are considered to start or separate the seasons; in others they are considered to be center points (in English, in the Northern hemisphere, for example, the period around the June solstice is known as midsummer, and Midsummer's Day is 24 June, about three days after the solstice itself).
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Noun
1. either of the two times of the year when the sun is at its greatest distance from the celestial equator
(hypernym) cosmic time
(hyponym) summer solstice, June 21, midsummer

n. solstice, either of the two times of the year when the sun is farthest from the equator (Astronomy)

(v. i.)
The time of the sun's passing the solstices, or solstitial points, namely, about June 21 and December 21. See Illust. in Appendix.
  

(v. i.)
The point in the ecliptic at which the sun is farthest from the equator, north or south, namely, the first point of the sign Cancer and the first point of the sign Capricorn, the former being the summer solstice, latter the winter solstice, in northern latitudes; -- so called because the sun then apparently stands still in its northward or southward motion.
  

(v. i.)
A stopping or standing still of the sun.