Definition of backorder in English:
backorder
Pronunciation /ˈbakˌôrdər/ /ˈbækˌɔrdər/
noun
A retailer's order for a product that is temporarily out of stock with the supplier.
- ‘the phone I wanted was on backorder’
transitive verb
[with object]Place an order for (a product) that is temporarily out of stock.
‘the item was backordered by our distributor’
- ‘the taps can be backordered and take up to three months for delivery’