Pronunciation: (thresh'ōld, thresh'hōld), [key]
1. the sill of a doorway.
2. the entrance to a house or building.
3. any place or point of entering or beginning: the threshold of a new career.
4. Also called limen. Psychol., Physiol. the point at which a stimulus is of sufficient intensity to begin to produce an effect: the threshold of consciousness; a low threshold of pain.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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