"On Demand" is a word in LAW AND LEGAL

In America (and formerly in England), a promissory note of a bank payable to the bearer on demand, and used …

A promissory note issued by a bank or banking company, payable to bearer on demand.

The act of demanding; an asking with authority; a peremptory urging of a claim; a claiming or challenging as due; …

Owed, as a debt; that ought to be paid or done to or for another; payable; owing and demandable.

There is no legal difference between an obligation payable “when de-manded” or “on demand” and one payable “on call” or …

A note issued by a bank, payable at some future specified time, as distinguished from a note payable on demand.

A species of bank-notes payable at a distant period, and not on demand