English Reference
noun

threshold

n.
US /ˈθɹɛˌʃoʊɫd/ UK /θɹˈɛʃəʊld/ thresh·old UK spelling threshold's, threshold's

  1. 01 B2 Upper Intermediate

    the floor at the bottom of a doorway that you step over to enter a room or building.

    the piece of wood or stone which lies under a door; a sill that must be crossed to enter a structure.

    Simple

    He paused at the threshold of the house, hesitant to step inside.

    In context

    The traditional custom involved the groom carrying the bride over the threshold to ensure good luck in their new home.

  2. 02 B2 Upper Intermediate

    the point just before a new situation or a big change starts.

    the point of entering or beginning a new state, period, or experience.

    Simple

    The young graduates felt they were on the threshold of a new life.

    In context

    The discovery of the new vaccine placed the medical community on the threshold of a revolutionary era in preventative care.

  3. 03 C1 Advanced AcademicTechnical Science

    the level or point at which something starts to happen or change.

    the magnitude or intensity that must be exceeded for a certain reaction, phenomenon, or condition to occur.

    Simple

    Some people have a very low threshold for pain and feel it quickly.

    In context

    The sensor is programmed to ignore minor vibrations until they reach a specific threshold that indicates a potential structural failure.

  4. 04 C2 Proficiency Technical Aviation

    the very beginning of the part of a runway where a plane can land.

    the beginning of that portion of the runway usable for landing.

    Simple

    The pilot lined up the aircraft with the runway threshold for a smooth landing.

    In context

    Heavy rain reduced visibility so much that the pilot could barely discern the threshold markings during the final approach.

Usage low threshold

While Saturday will still feel very warm in south-eastern areas of England, temperatures will have mostly come down below the heatwave threshold of 28C, marking an end to the current heatwave.

BBC News· 14 Aug 2026

It also calls for the government to abolish the social care savings threshold for working-age people and equalise staff pay between social care and the NHS.

BBC News· 14 Aug 2026

From Middle English threschwolde, threscholde, from Old English þresċold, þerxold, þrexwold (“doorsill, entryway”), from Proto-Germanic þreskudlaz, þreskūþlijaz, þreskwaþluz, from Proto-Germanic þreskaną, þreskwaną (“to thresh, (originally) to tread”), from Proto-Indo-European terh₁- (“to rub, turn”). Cognate with Low German Drüssel (“threshold”), dialectal German Drischaufel, Drissufle, Trüschübel (“threshold”), Danish tærskel (“threshold”), Norwegian terskel (“threshold”), Swedish tröskel (“threshold”), dialectal Swedish träskvald (“threshold”), Icelandic þröskuldur (“threshold”). Pronunciations such as “thresh-hold” are un-etymological and result from analogy with hold.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin ine-pro *terh₁-
Level C1 · Advanced
Frequency Common
Updated