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space bar

noun
1.
a horizontal bar on a typewriter keyboard that is depressed in order to resume typing one space to the right.
2.
a horizontal bar on a computer keyboard that is depressed in order to move the cursor one space to the right or, often, to perform some function in a program.
Origin
1885-1890
1885-90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for space-bar

space-bar

noun
1.
a horizontal bar on a typewriter that is depressed in order to leave a space between words, letters, etc
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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Word Value for space

9
11
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