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[pleys-hohl-der] /ˈpleɪsˌhoʊl dər/
noun
1.
Mathematics, Logic. a symbol in an expression that may be replaced by the name of any element of the set.
2.
a person who holds a government office, especially one appointed to the position in return for political support or favors.
Origin
1550-1560
1550-60; place + holder
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for place-holder
n.

also placeholder, 1550s, from place (n.) + holder (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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