threshold

/'θreʃhould/
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threshold

He stood on the threshold before entering the room.

Definition
  1. Noun:
    • A region marking a boundary: The point or line where one condition, state, or area ends and another begins.
    • The sill of a door: A horizontal piece of wood, stone, or metal that forms the bottom of a doorway and provides support when passing through.
    • An entrance or doorway: The space in a wall through which you enter or leave a room or building; the opening that a door closes.
    • The smallest detectable sensation: (In psychology or physiology) The minimum level of stimulus intensity needed for a sensation to be detected.
    • The starting point for a new state or experience: The beginning of a particular stage, period, or condition.
Usage Examples
  • As a physical boundary or part of a door:
    • She paused at the threshold before entering the old house.
    • The wooden threshold was worn smooth by generations of footsteps.
  • As an entrance or doorway:
    • Light spilled from the threshold into the dark hallway.
    • He stood in the threshold, blocking the entrance.
  • As the beginning of a new state:
    • The invention of the telephone was on the threshold of a new era in communication.
    • She was on the threshold of a brilliant career.
  • As a minimum detectable level:
    • The sound was just above the hearing threshold for most participants.
Advanced Usage
  • "On the threshold of": At the point of beginning or entering something new.
    • The country stands on the threshold of major economic reform.
  • "Pain threshold": The point at which a stimulus begins to be felt as pain.
    • Her high pain threshold allowed her to endure the procedure.
  • "Threshold of consciousness": The minimum level of awareness.
    • The memory existed just below the threshold of consciousness.
Variants and Related Words
  • Thresholding (n): (In data analysis or image processing) The process of converting a grayscale image into a binary image based on a set value.
    • The software uses thresholding to distinguish the object from the background.
  • Threshold limit value (TLV) (n): (In occupational safety) The maximum concentration of a chemical a worker can be exposed to over a work shift.
  • Subthreshold (adj): Below the minimum level required to produce a response or sensation.
    • The stimulus was subthreshold and went unnoticed.
Synonyms
  • Doorstep: The step or ledge at the bottom of a doorway.
  • Vestibule: A small entrance hall or passage between the outer door and the interior of a building.
  • Brink: The extreme edge of something, often before a change.
  • Onset: The beginning of something, especially something unpleasant.
  • Liminal point: A transitional or initial stage of a process.
Related Phrases and Idioms
  • Cross the threshold: To enter a place or begin a new phase.
    • The moment she crossed the threshold, she felt at home.
  • Below the threshold: Not meeting the minimum level required to be considered or detected.
    • The donation was below the threshold for a tax receipt.
  • Threshold amount/level: A specific quantity that must be reached for something to happen or apply.
    • You must earn above the threshold amount to pay this tax.
threshold

He stood on the threshold before entering the room.

Noun
  1. a region marking a boundary
  2. 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
  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
  4. the smallest detectable sensation
  5. the starting point for a new state or experience
    • on the threshold of manhood