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noun place·hold·er \ˈplās-ˌhōl-dər\

Definition of PLACEHOLDER

:  a symbol in a mathematical or logical expression that may be replaced by the name of any element of a set
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First Known Use of PLACEHOLDER

1958
PLACEHOLDER Defined for Kids

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noun place·hold·er \ˈplās-ˌhōl-dər\

Definition of PLACEHOLDER for Kids

:  a symbol (as x, Δ, *) used in mathematics in the place of a numeral

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