Definition of solstice noun from the Oxford Advanced Learner's Dictionary

 

solstice

 noun
noun
BrE BrE//ˈsɒlstɪs//
 
; NAmE NAmE//ˈsɑːlstəs//
 
The sun and the moon
 
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either of the two times of the year at which the sun reaches its highest or lowest point in the sky at midday, marked by the longest and shortest days the summer/winter solstice Wordfinderdaylight, eclipse, equinox, ray, rise, solar, solstice, the sun, twilight, the universe See related entries: The sun and the moon Word Origin Middle English: from Old French, from Latin solstitium, from sol ‘sun’ + stit- ‘stopped, stationary’ (from the verb sistere).
See the Oxford Advanced American Dictionary entry: solstice