- pertaining to, dependent on, or accompanying the seasons of the year or some particular season; periodical: seasonal work.
- a seasonal product, employee, etc.: to hire seasonals.
- of, relating to, or occurring at a certain season or certain seasons of the yearseasonal labour
adj.“pertaining to the seasons; relating to a season,” 1829, from season (n.) + -al (1). Of workers or employment, from 1904. Related: Seasonally.