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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for junction box

  • Delaney has a set made by this trouble-hunter when he was at the junction-box.

    Whispering Wires|Henry Leverage
  • Say, Tupper, I went over the junction-box in the alley back of the house.

    Whispering Wires|Henry Leverage
  • He disconnected the library telephone wires at the junction-box in the alley.

    Whispering Wires|Henry Leverage
  • But, Delaney, how could a man tap in on that junction-box and never leave prints in the snow?

    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

Science definitions for junction box

junction box

[ jŭngkshən ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.