[tol.er.ance] n (15c) 1: capacity to endure pain or hardship: endurance, fortitude, stamina
2. a: sympathy or indulgence for beliefs or practices differing from or conflicting with one's own b: the act of allowing something: toleration
3: the allowable deviation from a standard; esp: the range of variation permitted in maintaining a specified dimension in machining a piece
4. a (1): the capacity of the body to endure or become less responsive to a substance (as a drug) or a physiological insult with repeated use or exposure "immunological ~ to a virus" "an addict's increasing ~ for a drug" (2): relative capacity of an organism to grow or thrive when subjected to an unfavorable environmental factor b: the maximum amount of a pesticide residue that may lawfully remain on or in food