back-ordered; back-ordering; back-orders
Definition of back-order
(Entry 1 of 2)
: to assign to the status of back order
back order
nounDefinition of back order (Entry 2 of 2)
: a business order yet to be fulfilled because stock is unavailable
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Merriam-Webster unabridged
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The first known use of back-order was in 1887
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