A strip of wood, metal, or stone forming the bottom of a doorway and crossed in entering a house or room
the threshold of the church
The point beyond which a stimulus causes pain
A point in a conflict at which nuclear weapons are or would be brought into use
The smallest amount by which two sensory stimuli can differ in order for an individual to perceive them as different
= significance level; (also) the minimum significant difference between sets of data at a given significance level.