1. noun /dɪˈmɑːnd,dɪˈmænd/
Prices usually go up when demand exceeds supply.
b) The amount of a good or service that a consumer is willing to buy at a particular price.
There is a demand for voluntary health workers in the poorer parts of Africa and Asia.
2. verb /dɪˈmɑːnd,dɪˈmænd/
a) To request forcefully.
I demand to see the manager.
b) To claim a right to something.
The bank is demanding the mortgage payment.
Wikipedia foundation.