1. a person who places an order for goods or services
2. a person who arranges things in a systematic way

Examples

• The orderer requested expedited shipping for the office supplies.
• As the primary orderer for the restaurant, she negotiated better prices with suppliers.
• The orderer forgot to specify the correct size in the purchase request.
• He was known as an orderer who could organize any chaotic workspace.
• The orderer carefully arranged the books by publication date.
• Each orderer must provide a valid purchase order number.