/ˈsi:zn ||; ˈsizṇ/noun[C] 1 one of the periods of different weather into which the year is divided （一年中的）季: In cool countries, the four seasons are spring, summer, autumn and winter. 温带地区有春、夏、秋、冬四个季节。the dry/rainy season 旱季；雨季
2 the period of the year when sth is common or popular or when sth usually happens or is done 季节；旺季: the holiday/football season 度假旺季；足球赛季
in season 1 (used about fresh foods) available in large quantities （指新鲜食物）当令，应时
2 (used about a female animal) ready to have sex （指雌性动物）在发情期
out of season 1 (used about fresh foods) not available in large quantities （指新鲜食物）不当令，不应时
2 (used about a place where people go on holiday) at the time of year when it is least popular with tourists （指度假胜地）在游客最少的期间，在淡季