sea·son·al 
/ˈsi:zn̩əl/ adjective
/ˈsi:zn̩əl/ adjective 1 : happening or needed during a particular time of the year
▪ The rise in gas prices is seasonal. ▪ The store hires seasonal workers during the holidays. 2 : normal for a certain time of year
▪ seasonal decorations ▪ I have seasonal allergies.
▪ The rise in gas prices is seasonal. ▪ The store hires seasonal workers during the holidays.
▪ seasonal decorations ▪ I have seasonal allergies.
— sea·son·al·i·ty /ˌsi:zəˈnæləti/ noun [noncount] technical
▪ We tracked the seasonality of rainfall levels.
/ˌsi:zəˈnæləti/ noun [noncount] technical ▪ We tracked the seasonality of rainfall levels.
— sea·son·al·ly adverb
▪ The restaurant changes its menu seasonally.
▪ The restaurant changes its menu seasonally.
