summer solstice

summer solstice

noun Astronomy.
the solstice on or about June 21st that marks the beginning of summer in the Northern Hemisphere.

Origin:
1540–50
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Summer solstice is always a great word to know.
So is constellation. Does it mean:
any of various groups of stars to which definite names have been given and the section of the heavens occupied by such a group, such as Ursa Major, Andromeda
a system of two stars that revolve about a common center of mass
Collins
World English Dictionary
summer solstice
 
n
1.  the time at which the sun is at its northernmost point in the sky (southernmost point in the S hemisphere), appearing at noon at its highest altitude above the horizon. It occurs about June 21 (December 22 in the S hemisphere)
2.  astronomy the point on the celestial sphere, opposite the winter solstice, at which the ecliptic is furthest north from the celestial equator. Right ascension: 6 hours; declination: 23.5°

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Science Dictionary
summer solstice   (sŭm'ər)  Pronunciation Key 
See under solstice.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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