Meaning of seasonality in English:

seasonality

Pronunciation /ˌsiːzəˈnalɪti/

noun

mass noun
  • The quality or fact of varying with or depending on the season or time of year.

    ‘the seasonality of employment in the industry has always been an accepted feature’
    • ‘general patterns in birth seasonality’
    • ‘we should all seek food closer to home—this means enjoying seasonality’

Origin

1930s from seasonal + -ity.