threshold meaning and definition

THRESHOLD noun

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: door, doorway, 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