Rar"i*ty (?), n.; pl. Rarities (#). [L. raritas: cf. F. raret'e. See Rare.]

1.

The quality or state of being rare; rareness; thinness; as, the rarity (contrasted with the density) of gases.

2.

That which is rare; an uncommon thing; a thing valued for its scarcity.

I saw three rarities of different kinds, which pleased me more than any other shows in the place. Addison.

 

© Webster 1913.