Noun purchase order has 1 sense
  1. order, purchase order - a commercial document used to request someone to supply something in return for payment and providing specifications and quantities; "IBM received an order for a hundred computers"
    --1 is a kind of commercial document, commercial instrument
    --1 has particulars:
     credit order, bill-me order; indent; market order; production order; stop order, stop-loss order; stop payment; mail order
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