noun, plural rarities.
, 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
occurrence; infrequency: Volcanic eruptions on the island occur with great rarity.
thinness, as of air or a gas.
< Latin rāritās
thinness, equivalent to rār
+ -itās -ity