The bottom-most part of a doorway that one crosses to enter; a sill. / (by extension) An entrance; the door or gate of a house. / (by extension) Any end or boundary.

plural of threshold

(image processing) The process of creating a black-and-white image out of a grayscale image by setting exactly those pixels to white whose value is above a given threshold, and setting the other pixels to black.

Pertaining to, or produced by thresholding

plural of thresholder

A person who occupies the threshold between places or statuses.

The minimum intensity or duration of a sensory stimulus applied to a living being at which it becomes considered painful.

(sciences, economics) Something that occurs only once a critical threshold has been reached.

plural of pain threshold

(economics) A level of income, above the poverty line, but not high enough to cope with economic shocks.