From Old English þresċold, þerxold, þrexwold (“doorsill", "point of entering”), from Old English þresċan (“thresh”), from Proto-Germanic *þreskaną (“thresh”) and *-thlo (instrumental suffix); the first part ultimately from Proto-Indo-European *terh₁- (“to rub, turn”).
threshold (plural thresholds)
- The bottom-most part of a doorway that one crosses to enter; a sill.
- (by extension) An entrance
- The start of the landing area of a runway
- (engineering) The quantitative point at which an action is triggered, especially a lower limit.
- The wage or salary at which income tax becomes due
- The outset of an action or project
- The point where one mentally or physically is vulnerable in response to provocation or to particular things in general. As in emotions, stress, or pain.
- The point of beginning or entry
- From all the pressure my partner has been through lately, his emotional threshold has suddenly gotten pretty low these days. I can tell because he easily loses it when he is around people or hears about anything to do with his concerns.
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.