Anything that is seasonal, such as a financial trend, a product for sale, or an employee.

Occurring every season. / Occurring only in season.

Opportune; occurring at an appropriate or suitable time. / Appropriate to the current season of the year. / (obsolete) Ephemeral; lasting for just one season.

plural of season

Third-person singular simple present indicative form of season

plural of seasonal

plural of seasoning

In the time for eating, using, etc. / In heat

happening or used in a particular season

one of the four parts of the year determined mainly by the weather during that time