A stretch of sunny and warm, often hazy, days during late autumn. / (figuratively) The late autumn of life; a late flowering of activity before old age.

(astronomy) The moment when the Earth is in that point of its orbit where the northern or southern hemisphere is most inclined toward the sun.

Relating to the summer. / Of weather, typical of summer.

Misspelling of summary.

(countable) A female given name from English of modern usage, from summer, the name of the season, often given to girls born in summer. / (countable) A surname.

simple past tense and past participle of sum

Any of various academic sessions held in the summer at schools or universities when the usual students are away; either for supplementary or remedial study or as part of distance learning.

The period or season of summer.

(uranography) A bright asterism of the northern summer sky. Its corners are the three 1st-magnitude stars Altair (α Aql), Deneb (α Cyg), and Vega (α Lyr).

plural of summer