plural back orders
chiefly US, business
: a product that has been ordered but not sent to the customer because it is not yet available
The book I want to buy is a back order and won't be shipped for three weeks.
The book I want to buy is on back order and won't be shipped for three weeks.
Cite this Entry
“Back order.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/back%20order. Accessed 24 Jul. 2026.
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