open account

1. Unpaid credit order also called open credit.

2. Credit relationship between a buyer and a seller.

1. Account that has a nonzero credit or debit balance.

2. Credit or charge account-that is, an account initiated by a creditor on the basis of credit standing. It may also refer to a balance currently owing due to a credit sale, under mutually agreed-upon terms (such as method of payment, trade discounts, delivery date, and quantities).

A straightforward arrangement between the dentist and the patient for the handling of financial payments due the dentist and owed by the patient.