Short for account receivables, this refers to debts owed to your company, usually from sales on credit. Accounts receivable is a business asset, the sum of the money owed to you by customers who haven’t paid.
The standard procedure in business-to-business sales is that when goods or services are delivered they come with an invoice, which is to be paid later. Business customers expect to be invoiced and to pay later. The money involved goes onto the seller’s books as accounts receivable, and onto the buyer’s books as accounts payable.
For more on the subject, check out What Is Accounts Receivable?