Definition of Required

Adjective: required ri'kwI(-u)rd

Necessary for relief or supply
"provided them with all things required";
- needed, needful, requisite
Required by rule
"required reading";
- compulsory, mandatory

Verb: require ri'kwI(-u)r

Must happen, have or exist previously or during (in order for stated thing to be happen or be the case)
"success usually requires hard work";
- necessitate, ask, postulate, need, take, involve, call for, demand
Consider obligatory; request and expect
"We require our secretary to be on time";
- ask, expect
Make someone do something
- command
Have a requirement for
"This piano requires the attention of a competent tuner";
- want, need