threshold
threshold
UK[ˈθreʃ.həʊld]US[ˈθreʃ.hoʊld]
n
A strip of wood or stone forming the bottom of a doorway and crossed when entering a building or room.
n
The level at which something starts to happen or have an effect; a point of entry or beginning.
Etymology
The word 'threshold' originates from the Old English 'þrescold' or 'þerxold'. Its first element is likely related to the Old English verb 'þrescan', meaning 'to thresh' (to tread, trample, or beat grain). The second element's origin is obscure but may be connected to a word meaning 'hold' or 'support'. The literal logic is of a place that is trodden upon or a plank that holds against being trampled. Over time, this concrete meaning of the physical doorway base broadened metaphorically to signify any point of entry or the beginning level of an experience, sensation, or effect, bridging the physical and abstract realms.
Analysis
The word 'threshold' is a simplex word of Old English origin. It does not neatly segment into productive morphemes in modern English based on its current spelling.
Examples
He paused on the threshold before entering the dark room.
The company has lowered its hiring threshold to attract more candidates.
Her pain threshold is remarkably high.