Main Entry:

¹de·mand

Pronunciation:

\di-ˈmand, -ˈmänd, dē-\

Function:

noun

Date:

13th century

1 a: an act of demanding or asking especially with authority <a demand for obedience> b: something claimed as due <a list of demands>2archaic : question3 a: willingness and ability to purchase a commodity or service <the demand for quality day care> b: the quantity of a commodity or service wanted at a specified price and time <supply and demand>4 a: a seeking or state of being sought after <in great demand as an entertainer> b: urgent need5: the requirement of work or of the expenditure of a resource <equal to the demands of the office> <demands on one's time> <oxygen demand for waste oxidation>

— on demand

: upon presentation and request for payment ; also : when requested or needed <video on demand>