Definition of 'threshold'

Noun

1. the starting point for a new state or experience; "on the threshold of manhood"
2. the smallest detectable sensation
      Synonyms: limen
3. the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close; "he stuck his head in the doorway"
      Synonyms: doorway door room access
4. the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway
      Synonyms: doorsill doorstep
5. a region marking a boundary
      Synonyms: brink verge

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