Etymology: Middle English sesoun, from Anglo-French seison natural season, appropriate time, from Latin sation-, satio action of sowing, from serere to sow — more at sow
Date: 14th century
1 a: a time characterized by a particular circumstance or feature <in a season of religious awakening — F. A. Christie>b: a suitable or natural time or occasion <when my season comes to sit on David's throne — John Milton>c: an indefinite period of time :while<sent home again to her father for a season — Francis Hackett> 2 a: a period of the year characterized by or associated with a particular activity or phenomenon <hay fever season>: as (1): a period associated with some phase or activity of agriculture (as growth or harvesting) (2): a period in which an animal engages in some activity (as migrating or mating); also:estrus, heat(3): the period normally characterized by a particular kind of weather <a long rainy season>(4): a period marked by special activity especially in some field <tourist season><hunting season>(5): a period in which a place is most frequented b: one of the four quarters into which the year is commonly divided c: the time of a major holiday 3:year<a boy of seven seasons> 4[Middle English sesoun, from sesounen to season]:seasoning 5: the schedule of official games played or to be played by a sports team during a playing season <got through the season undefeated> 6:off-season<closed for the season>
— in season1: at the right time 2: at the stage of greatest fitness (as for eating) <peaches are in season> 3: legally available to be hunted or caught