tolerance (ABILITY TO BEAR)
 noun [U]
 the ability to bear something unpleasant or annoying, or to continue
 existing despite disadvantageous conditions
 My tolerance of heat is considerably greater after having lived in the
 Far East for a couple of years.
 I think I must have a very low pain-tolerance threshold.

 (specialized) Tolerance is also an animal or plant's ability not to be
 harmed by a drug or poison over a long period of time.
 It was said that Holmes had a greater tolerance to the drug than most
 people.

 tolerant   adjective
 I think I grow less tolerant of fools the older I get.
 I think on average men are less tolerant of stress than women.
 SPECIALIZED Compared to other plants, rye is less susceptible to disease
 and reasonably tolerant of drought.

 tolerate   verb [T]
 I can't tolerate excessive heat.
 It seems these ants can tolerate temperatures which would kill other
 species.
 She can't tolerate noise of any sort when she's trying to write.
 SPECIALIZED It's an alternative treatment for people who cannot tolerate
 the medicine because of heart problems or other medical conditions.