|Origin:||requeste, from Vulgar Latin, from requaerere; REQUIRE|
a polite or formal demand for something
Anderson repeated his request that we postpone the meeting.
at somebody's request (=because someone asked for it to be done)
The study was done at the request of the Chairman.
on request (=if you ask for it)
Further details will be sent on request.
There were no flowers at the funeral, by request.
a piece of music that is played on the radio because someone has asked for it