Definition of space key
2
: a key on a monotype keyboard each depression of which causes the setting of a space of fixed width (such as one em)
3
: the key on a key punch that controls the spacing of holes in punched cards
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“Space key.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/space%20key. Accessed 16 Jun. 2021.
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