Rarity | Mean of rarity in English Dictionary

/ˈrerəti/

• Noun
• a person or thing that is not common or usual
1. In most sports, athletes over the age of 50 are rarities.
2. Snow is a rarity in this part of the world.
• something that is valuable because there are few of its kind
1. He is selling most of his collection, keeping only the real rarities.
• the quality of being rare
1. The rarity of the disease makes it difficult to diagnose.