seasonal

/ˈsiːzənəl/ adjective

Definition

› relating to, available, or happening during a particular period of the year: a seasonal employee/worker a seasonal business/job seasonal demand/employment/work seasonal crops/fruit/products Chefs are recruited on a seasonal basis.

seasonal adjustment/change/variation › ECONOMICS a change made to figures or other data in order to remove the effect of things that only happen at particular times of year: Construction employment, which had been surprisingly strong since the beginning of the year, fell by 65,000 after seasonal adjustment. The figures are adjusted for seasonal changes.

(Definition of seasonal adjective from the Cambridge Business English Dictionary © Cambridge University Press)