'Required' definitions:

Definition of 'required'

(from WordNet)
adjective
Necessary for relief or supply; "provided them with all things needful" [syn: needed, needful, required, requisite]
adjective
Required by rule; "in most schools physical education is compulsory"; "attendance is mandatory"; "required reading" [syn: compulsory, mandatory, required]

Definition of 'Required'

From: GCIDE
  • Require \Re*quire"\ (r?-kw?r"), v. t. [imp. & p. p. Required (-kw?rd"); p. pr. & vb. n. Requiring.] [OE. requeren, requiren, OF. requerre, F. requ?rir; L. pref. re- re- + quaerere to ask; cf. L. requirere. See Query, and cf. Request, Requisite.]
  • 1. To demand; to insist upon having; to claim as by right and authority; to exact; as, to require the surrender of property. [1913 Webster]
  • Shall I say to Caesar What you require of him? --Shak. [1913 Webster]
  • By nature did what was by law required. --Dryden. [1913 Webster]
  • 2. To demand or exact as indispensable; to need. [1913 Webster]
  • Just gave what life required, and gave no more. --Goldsmith. [1913 Webster]
  • The two last [biographies] require to be particularly noticed. --J. A. Symonds. [1913 Webster]
  • 3. To ask as a favor; to request. [1913 Webster]
  • I was ashamed to require of the king a band of soldiers and horsemen to help us against the enemy in the way. --Ezra viii. 22. [1913 Webster]
  • Syn: To claim; exact; enjoin; prescribe; direct; order; demand; need. [1913 Webster]