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threescore
threesome
thremmatology
threnody
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thresher
threshing machine
threshold
threshold agreement
threshold firm
threshold frequency
threshold voltage
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threshold

thresh·old [ thré shld ] (plural thresh·olds)


noun 
Definition:
 
1. starting point: the point at which something begins or changes
on the threshold of maturity

2. level at which effect starts: the level that must be reached for a psychological or physiological effect to begin or be noticeable
the threshold of consciousness
her pain threshold

3. wood or stone below door: a piece of stone or hardwood that forms the bottom of a doorway

4. entrance: a doorway or entrance

[ Old English þerscold< Germanic]
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