pushbutton

push button

noun
1.
a device designed to close or open an electric circuit when a button or knob is depressed, and to return to a normal position when it is released.
2.
the button or knob depressed.
Also, pushbutton.


Origin:
1875–80, Americanism

Dictionary.com Unabridged

push-button

[poosh-buht-n]
adjective
1.
operated by or as if by push buttons: push-button tuning.
2.
using complex, automated weapons, as long-range missiles, that require only simple initial steps to put them into action: push-button warfare.

Origin:
1875–80, Americanism

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
push button
 
n
1.  an electrical switch operated by pressing a button, which closes or opens a circuit
2.  (modifier) push-button
 a.  operated by a push button: a push-button radio
 b.  initiated as simply as by pressing a button: push-button warfare

Collins English Dictionary - Complete & Unabridged 10th Edition
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