| 1. season between spring and autumn; entire year; period of hot and sunny weather. spend the summer, pass the summer. of summer, of the season between spring and autumn; suitable for summer, used during the summer. summersummer, n. [oe. sumer, somer, as. sumor, sumer; akin to ofries. sumur, d. zomer, os. sumar, g. sommer, ohg. & icel. sumar, dan. sommer, sw. sommar, w. haf, zend hama, skr. samā year. ?292.] the season of the year in which the sun shines most directly upon any region; the warmest period of the year.note: north of the equator summer is popularly taken to include the months of june, july, and august. astronomically it may be considered, in the northern hemisphere, to begin with the summer solstice, about june 21st, and to end with the autumnal equinox, about september 22d |