- The point where the earth stands at the extreme of its ellipsis around the sun.
- One of two days in the year when the day (as opposed to the night) is either longest or shortest, 20 or 21 June and 21 or 22 December.
- 1924: ARISTOTLE. Metaphysics. Translated by W. D. Ross. Nashotah, Wisconsin, USA: The Classical Library, 2001. Available at: <http://www.classicallibrary.org/aristotle/metaphysics/>. Book 1, Part 2.
- : For all men begin, as we said, by wondering that things are as they are, as they do about self"moving marionettes, or about the solstices or the incommensurability of the diagonal of a square with the side;
- Dutch: zonnewende, zonnestilstand
- German: Sonnenwende ; Sommersonnenwende (the longest day), Wintersonnenwende (the shortest day)
- solstitium (sol "sun" + stitium, from sistere "to stand still").
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