threshold

A threshold is what you step across when you enter a room. A threshold takes you from one place into another, and when you're about to start something new, you're also on a threshold.

A threshold is a point of departure or transition. Graduation can mark a threshold — when you graduate from circus school, you're standing at the threshold of your new career as a trapeze artist. Another kind of threshold is a limit or boundary. If you have a high threshold for pain, you can tolerate a lot of it, and your dentist can drill away without worrying about your squirming and howling.

Definitions of threshold
  1. noun
    the starting point for a new state or experience
    “on the threshold of manhood”
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    type of:
    beginning, commencement, first, get-go, kickoff, offset, outset, showtime, start, starting time
    the time at which something is supposed to begin
  2. noun
    the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close
    synonyms: door, doorway, room access
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    types:
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    exterior door, outside door
    a doorway that allows entrance to or exit from a building
    back door, back entrance, backdoor
    an entrance at the rear of a building
    Dutch door, half door
    an exterior door divided in two horizontally; either half can be closed or open independently
    front door, front entrance
    exterior door (at the entrance) at the front of a building
    side door, side entrance
    an exterior door at one side of a building
    type of:
    entrance, entranceway, entree, entry, entryway
    something that provides access (to get in or get out)
  3. noun
    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
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    type of:
    sill
    structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure
  4. noun
    a region marking a boundary
    synonyms: brink, verge
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    type of:
    bound, boundary, edge
    a line determining the limits of an area
  5. noun
    the smallest detectable sensation
    synonyms: limen
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    types:
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    absolute threshold
    the lowest level of stimulation that a person can detect
    difference limen, difference threshold, differential limen, differential threshold
    the smallest change in stimulation that a person can detect
    pain threshold
    the lowest intensity of stimulation at which pain is experienced
    jnd, just-noticeable difference
    (psychophysics) the difference between two stimuli that (under properly controlled experimental conditions) is detected as often as it is undetected
    type of:
    aesthesis, esthesis, sensation, sense datum, sense experience, sense impression
    an unelaborated elementary awareness of stimulation
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