seasonality

American  

[see-zuh-nal-i-tee] / ˌsi zəˈnæl ɪ ti /

noun

plural

seasonalities

1. the state or quality of being seasonal or dependent on the seasons.

   the seasonality of Halloween costumes.

2. Usually seasonalities a pattern, variation, or fluctuation that is correlated with a season, day of the week, or other period of time.

   a study of birth seasonalities;

   You get higher returns in January because of seasonalities in stock prices.

---

Etymology

Origin of seasonality

First recorded in 1900–05; seasonal ( def. ) + -ity ( def. )

Example Sentences

A summer launch may “capitalize on the strong seasonality,” they note.

From The Wall Street Journal

He points out people blamed large increases in core inflation in January 2024 and January 2025 on “residual seasonality,” when the real culprit was larger-than-usual price increases.

From Barron's

But many economists think that the BLS doesn’t fully iron out seasonal effects and that the data still exhibits “residual seasonality.”

From The Wall Street Journal

In recent years, residual seasonality has been even more prominent.

From The Wall Street Journal

If goods prices did jump last month, tariffs and residual seasonality aren’t mutually exclusive explanations.

From The Wall Street Journal