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The Collaborative International Dictionary
Required

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.

    Shall I say to C[ae]sar What you require of him?
    --Shak.

    By nature did what was by law required.
    --Dryden.

  2. To demand or exact as indispensable; to need.

    Just gave what life required, and gave no more.
    --Goldsmith.

    The two last [biographies] require to be particularly noticed.
    --J. A. Symonds.

  3. To ask as a favor; to request.

    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.

    Syn: To claim; exact; enjoin; prescribe; direct; order; demand; need.

Douglas Harper's Etymology Dictionary
required

c.1600, past participle adjective from require (v.). Required reading attested from 1881.

Wiktionary
required

vb. (en-past of: require)

WordNet
required
  1. adj. necessary for relief or supply; "provided them with all things needful" [syn: needed, needful, requisite]

  2. required by rule; "in most schools physical education are compulsory"; "attendance is mandatory"; "required reading" [syn: compulsory, mandatory]

Usage examples of "required".

Hotel, and has been attended by the most happy results, yet the cases have presented so great a diversity of abnormal features, and have required so many variations in the course of treatment, to be met successfully, that we frankly acknowledge our inability to so instruct the unprofessional reader as to enable him to detect the various systemic faults common to this ever-varying disease, and adjust remedies to them, so as to make the treatment uniformly successful.

And there were problems with these votes, since the Sem-inole County Canvassing Board had allowed Republican Party volunteers to fill in missing data on absentee-ballot applications completed by registered Republicansa violation of Florida lawand many overseas absentee ballots from members of the armed forces lacked the postmarks required by law.

One man had to defend voting absentee at the last minute, without having applied in advance, as the law required.

In a variety of analogous forms in different countries throughout Europe, the patrimonial and absolutist state was the political form required to rule feudal social relations and relations of production.

Achieving this end required that Einstein forge a second link in the chain uniting gravity and accelerated motion: the curvature of space and time, to which we now turn.

When the lead in the assay has been separated as sulphate and dissolved in sodic acetate, less chromate is apparently required, and in this case it will be necessary to precipitate the lead in the standard with an equivalent of sodic sulphate and redissolve in sodic acetate just as in the assay.

Gradually, the French became more and more intransigent and this climaxed in 1292 when the papal throne became vacant and the French and Italian factions in the College of Cardinals cancelled each other out to the extent that they wrangled for two years without reaching agreement: no candidate achieved the required two-thirds majority.

Because of the acidic components present in the reaction mixture of the mixed anhydride, about five mols or equivalents of the ammo compound are required per mole or equivalent of mixed anhydride for maximal conversion of the mixed anhydride to the amide.

Whether this acidity should be reported in terms of the lime or of the soda required to neutralise it will depend on which of these reagents is to be used in the actual practice.

The abbe being intimately acquainted with them, I gathered from him all the information I required, and, amongst other things, I heard that the young countess had a brother, then an officer in the papal service.

Only noblemen possess the finesse and acuity required to learn the skills of governing eotaurs and the fickle currents of the atmosphere.

Imbs was practicing his complicated piece, the so-called adagio, and the machinist, with a manipulation of the black switch box, had turned off all the machines for the time required to go through the piece three times.

If this is not satisfactory repeat the assay, adding an extra gram of nitre for each 4 grams of lead in excess of that required, or 1 gram of flour for a 12-gram deficiency.

The house having addressed the king for a particular and distinct account of the distribution of two hundred and fifty thousand pounds, charged to have been issued for securing the trade and navigation of the kingdom, and preserving and restoring the peace of Europe, he declined granting their request, but signified in general that part of the money had been issued and disbursed by his late majesty, and the remainder by himself, for carrying on the same necessary services, which required the greatest secrecy.

But, once more, admitting two distinct principles, something quite separate remembering what sense-perception has first known--still this something must have felt what it is required to remember?