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junction box

noun, Electricity.
an enclosure that houses electric wires or cables that are joined together and protects the connections.
Origin of junction box
First recorded in 1895-1900 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for junction box
Historical Examples
  • Such a junction box, with the through cable and the tap cable in place, is illustrated in Fig. 450.

  • She traced the launching circuits to a junction box and opened the lid.

    Deathworld Harry Harrison
  • A junction box is placed in a known locality with telephone or telegraph cables leading therefrom to the shore.

  • If a tall lad tapped in on the junction box early in the night his footprints will be frozen close to the ground.

    Whispering Wires Henry Leverage
British Dictionary definitions for junction box

junction box

an earthed enclosure within which wires or cables can be safely connected
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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junction box in Science
junction box
An enclosure within which electric circuits, such as the electrical wiring for different sections of a building, are connected to other circuits, such as outside power sources. Junction boxes are very common in telecommunications circuitry and are used to protect the connections and provide easy access to them.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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