solstice

definition: 
Either of the two times in the year, the summer solstice and the winter solstice, when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days.
sentence: 
The minimum length of shadow during a day is less in summer than in winter and at the solstices it changes from lengthening to shortening or visa versa. Now that the solstice has passed, winter is officially upon us.
difficulty: 
easy
toefl classification: