1 rare Natural, innate character or quality; natural ability.
2The state of nature; the natural, inborn way of behaving; naturalness.
The state or property of a mathematical entity of being natural.
Late Middle English; earliest use found in Guy de Chauliac's Grande Chirurgie. From Middle French, French naturalité from post-classical Latin naturalitat-, naturalitas natural character (Tertullian, 3rd century), naturalness from classical Latin nātūrālis + -tās.