re·quest 
(rĭ-kwĕst)
(rĭ-kwĕst)tr.v. re·quest·ed, re·quest·ing, re·quests
1. To express a desire for, especially politely; ask for. Often used with an infinitive or clause: requested information about the experiment; requested to see the evidence firsthand; requested that the bus driver stop at the next corner.
2. To ask (a person) to do something: The police requested her to accompany them.
n.
Idioms: 1. An act of asking for something.
2. Something asked for: wasn't happy until he got his request.
by request
In response to an expressed desire: We are offering these scarves for sale again by request.
in request
In great demand: a pianist in great request.
on/upon request
When asked for: References are available on request.
[From Middle English requeste, the act of requesting, from Old French, from Vulgar Latin *(rēs) requaesita, (thing) requested, from alteration of Latin requīsīta, feminine past participle of requīrere, to ask for; see REQUIRE.]
re·quester n.