Definicija: The relationship between the amount or quantity of a commodity that is available for purchase and the desire or ability of consumers to buy or purchase the commodity, which, in theory, determines the commodity's price in a free market.

Definicija: Odnos med količino proizvodov, ki so dostopni za nakup, in med zahtevo oziroma sposobnostjo potrošnika za nakup proizvodov, kar v teoriji določa ceno proizvoda na prostem trgu.

Definicija: The desire, ability and willingness of an individual to purchase a good or service. The consumer must have the funds or the ability to obtain funds in order to convert the desire into demand. The demand of a buyer for a certain good is a schedule of the quantities of that good which the individual would buy at possible alternative prices at a given moment in time.

Definicija: Želja, zmožnost in volja posameznika, da kupi neko blago ali storitev. Kupec mora imeti sredstva ali možnost pridobiti sredstva, s katerimi lahko spremeni željo v povpraševanje. Povpraševanje kupca po nekem blagu je predvidena količina tega blaga, ki bi ga posameznik kupil, po različnih možnih cenah v nekem trenutku.