In dictionaries:
three-way calling
a way of adding a third party to your conversation without the assistance of a telephone operator
three-way switch
(US, electricity) A type of light switch that can be arranged in pairs to control lights from two locations, as at either end of a stairway or long hallway; a double-throw switch. (British): two-way switch.
three-way circuit
three-way switch (how-to wire)
three-way bulb
three-way valve
Three-way comparison
In computer science, a three-way comparison takes two values A and B belonging to a type with a total order and determines whether A < B, A = B, or A > B in a single operation, in accordance with the mathematical law of trichotomy.
Three-way junction
A three-way junction (or three-way intersection) is a type of road intersection with three arms.
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