Definition of threshold noun from the Oxford Advanced Learner's Dictionary

threshold

noun
ˈθreʃhəʊld
 
; ˈθreʃhoʊld
 
 
1 the floor or ground at the bottom of a doorway, considered as the entrance to a building or roomShe stood hesitating on the threshold.He stepped across the threshold.2 the level at which something starts to happen or have an effectHe has a low boredom threshold(= he gets bored easily).I have a high pain threshold(= I can suffer a lot of pain before I start to react).My earnings are just above the tax threshold(= more than the amount at which you start paying tax).3 [usually singular] the point just before a new situation, period of life, etc. beginsShe felt as though she was on the threshold of a new life.
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