rar ‧ i ‧ ty /ˈreərəti, ˈreərɪti $ ˈrer-/ BrE AmE noun ( plural rarities )
[ Word Family: noun : ↑ rarity ; adverb : ↑ rarely ; adjective : ↑ rare ]
1 . be a rarity to not happen or exist very often:
Visitors were a rarity in the village.
2 . [countable] something that is valuable or interesting because it is rare:
Some of these plants are national rarities.
3 . [uncountable] the quality of being rare:
Such stamps are expensive because of their rarity.