to have need of; need:[~ + object]He requires medical care.
to order (someone) to do something; demand, esp. with authority: [~ + object + to + verb]The judge required the witness to testify.[~ + that clause]The judge required that the witness testify.[no object]to do as the law requires.
to make necessary:[~ + object]The work required great patience.
to place (someone) under an obligation to do something:[not: be + ~-ing; ~ + object + to + verb]You are required to answer all questions.
require/rɪˈkwaɪə/vb (mainly tr; may take a clause as object or an infinitive)
to have need of; depend upon; want
to impose as a necessity; make necessary: this work requires precision
(also intr) to make formal request (for); insist upon or demand, esp as an obligation
to call upon or oblige (a person) authoritatively; order or command: to require someone to account for his actions
Etymology: 14th Century: from Old French requerre, from Vulgar Latin requaerere (unattested) to seek after, from Latin requīrere to seek to know, but also influenced by quaerere to seek
reˈquirernUSAGE The use of require to as in I require to see the manager or you require to complete a special form is thought by many people to be incorrect: I need to see the manager; you are required to complete a special form