something rare, unusual, or uncommon

Snowstorms are a rarity in the South.

something esteemed or interesting in being rare, uncommon, or curious

That folio is a rarity that will bring a good price.

the state or quality of being rare.

rare occurrence; infrequency

Volcanic eruptions on the island occur with great rarity.

unusual excellence.

thinness, as of air or a gas.

noun

anomaly , antique , curiosity , oddity , scarcity , wonder