0 past simple and past participle of demand
1 to ask for something forcefully, in a way that shows that you do not expect to be refused:
I demanded an explanation.
He has always demanded the highest standards of behaviour from his children.
[ + speech ] "And where do you think you're going?" demanded the police officer.
[ + to infinitive ] I demand to see the manager.
[ + that ] She demanded that he return the books he borrowed from her.
2 to need something such as time, effort, or a particular quality:
This is a very difficult piece of music to play - it demands a lot of concentration.
He seems to lack many of the qualities demanded of (= needed by) a successful politician.
We demand freedom from injustice/persecution .
It was grossly unfair to demand such a high interest rate on the loan.
Carrying a gun, he walked up to the cashier and demanded money.
She strode purposefully up to the desk and demanded to speak to the manager.
That principle, to recall, said that an agent should per form those actions demanded by plans it was optimal to adopt.
Obviously, the formalised behaviour demanded of visitors is no different from that expected in museums all over the world.
However, what differs is the size of the bus operated, not the amount of work demanded. 11.
