from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To exercise authoritative or dominating influence over; direct. See Synonyms at conduct.
  • transitive v. To adjust to a requirement; regulate: controlled trading on the stock market; controls the flow of water.
  • transitive v. To hold in restraint; check: struggled to control my temper.
  • transitive v. To reduce or prevent the spread of: control insects; controlled the fire by dousing it with water.
  • transitive v. To verify or regulate (a scientific experiment) by conducting a parallel experiment or by comparing with another standard.
  • transitive v. To verify (an account, for example) by using a duplicate register for comparison.
  • n. Authority or ability to manage or direct: lost control of the skidding car; the leaders in control of the country.
  • n. One that controls; a controlling agent, device, or organization.
  • n. An instrument or set of instruments used to operate, regulate, or guide a machine or vehicle. Often used in the plural.
  • n. A restraining device, measure, or limit; a curb: a control on prices; price controls.
  • n. A standard of comparison for checking or verifying the results of an experiment.
  • n. An individual or group used as a standard of comparison in a control experiment.
  • n. An intelligence agent who supervises or instructs another agent.
  • n. A spirit presumed to speak or act through a medium.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To exercise influence over, to suggest or dictate the behavior of, oversit.
  • n. Influence or authority over.
  • n. A separate group or subject in an experiment against which the results are compared where the primary variable is low or nonexistence.
  • n. The method and means of governing the performance of any apparatus, machine or system, such as a lever, handle or button.
  • n. restraint or ability to contain one's emotions, or self-control.
  • n. A security mechanism, policy, or procedure that can counter system attack, reduce risks, and resolve vulnerabilities; a safeguard or countermeasure.
  • n. A means of monitoring for, and triggering intervenion in, activities that are not going according to plan.
  • n. An interface element that a computer user interacts with, such as a window or a text box.

from the GNU version of the Collaborative International Dictionary of English

  • n. A duplicate book, register, or account, kept to correct or check another account or register; a counter register.
  • n. That which serves to check, restrain, or hinder; restraint.
  • n. Power or authority to check or restrain; restraining or regulating influence; superintendence; government.
  • n. The complete apparatus used to control a mechanism or machine in operation, as a flying machine in flight
  • n. Any of the physical factors determining the climate of any particular place, as latitude,distribution of land and water, altitude, exposure, prevailing winds, permanent high- or low-barometric-pressure areas, ocean currents, mountain barriers, soil, and vegetation.
  • n. in research, an object or subject used in an experimental procedure, which is treated identically to the primary subject of the experiment, except for the omission of the specific treatment or conditions whose effect is being investigated. If the control is a group of living organisms, as is common in medical research, it is called the control group.
  • n. the part of an experimental procedure in which the controls{6} are subjected to the experimental conditions.
  • n. the group of technical specialists exercising control by remote communications over a distant operation, such as a space flight.
  • transitive v. To check by a counter register or duplicate account; to prove by counter statements; to confute.
  • transitive v. To exercise restraining or governing influence over; to check; to counteract; to restrain; to regulate; to govern; to overpower.
  • transitive v. to assure the validity of an experimental procedure by using a control{7}.

from The Century Dictionary and Cyclopedia

  • To check or ascertain the accuracy of, as by a counter-register or double account, or by experiment.
  • To prove by counter-statements; confute; convict.
  • To exercise control over; hold in restraint or check; subject to authority; direct; regulate; govern; dominate.
  • To have superior force or authority over; overpower.
  • Synonyms 3. Rule, Regulate, etc. (see govern), curb, restrain, direct.
  • n. Whatever serves to control or check; particularly, a standard of comparison by which, as in scientific investigation or experiment, inferences or results already obtained are checked.
  • n. A person or persons who control a business, or act as a check on others concerned.
  • n. In spiritualism, the supposed spirit who is alleged to control or direct the action and utterances of a medium.
  • n. In racing with motor-cars or motor-cycles, the authorized persons along the route who observe and record the times of arrival and departure of the cars, maintain the time and rate schedule if there is any, and enforce the regulations of the contest.
  • Of the nature of or used as a control.
  • n. A book-register or account kept to correct or check another account or register; a counter-register.
  • n. Check; restraint: as, to speak or act without control; to keep the passions under control.
  • n. . The act or power of keeping under check or in order; power of direction or guidance; authority; regulation; government; command.
  • n. Synonyms Influence, Ascendancy, etc. (see authority), direction, charge, regulation.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. exercise authoritative control or power over
  • n. a relation of constraint of one entity (thing or person or group) by another
  • v. control (others or oneself) or influence skillfully, usually to one's advantage
  • n. the state that exists when one person or group has power over another
  • n. a spiritual agency that is assumed to assist the medium during a seance
  • v. handle and cause to function
  • v. verify by using a duplicate register for comparison
  • v. check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard
  • v. be careful or certain to do something; make certain of something
  • n. a mechanism that controls the operation of a machine
  • n. (physiology) regulation or maintenance of a function or action or reflex etc
  • v. have a firm understanding or knowledge of; be on top of
  • n. great skillfulness and knowledge of some subject or activity
  • n. discipline in personal and social activities
  • n. the economic policy of controlling or limiting or curbing prices or wages etc.
  • v. lessen the intensity of; temper; hold in restraint; hold or keep within limits
  • n. power to direct or determine
  • n. a standard against which other conditions can be compared in a scientific experiment
  • n. the activity of managing or exerting control over something


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English controllen, from Anglo-Norman contreroller, from Medieval Latin contrārotulāre, to check by duplicate register, from contrārotulus, duplicate register : Latin contrā-, contra- + Latin rotulus, roll, diminutive of rota, wheel; see ret- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English conterrolle, from Old French contrerole, from Medieval Latin contrarotulum ("a counter-roll or register used to verify accounts"), from Latin contra ("against, opposite") + Medieval Latin rotulus, Latin rotula ("roll, a little wheel"), diminutive of rota ("a wheel").


  • If she can't control her campaign how the heck can she * control* the giant bureacracy that is our government?

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  • Grant it; and for the very same reason we wish steam with all the world; not that we may control the world, for this is costly and unremunerative, as Great Britain finds; but to conform it, and especially to _control_ its commerce.

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  • The captain, must, therefore, control the company through the platoon commanders -- that is to say, he _actually directs_ the fire and the platoon commanders, assisted by the squad leaders, _actually control_ it.

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  • These are the consequences inevitable to our public peace, from the scheme of rendering the executory government at once odious and feeble; of freeing administration from the constitutional and salutary control of Parliament, and inventing for it a _new control_, unknown to the constitution, an _interior cabinet_; which brings the whole body of government into confusion and contempt.

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  • Power grids fail, ­chemical plants ­explode, air traffic control systems break down, ­satellites spin out of ­control and so on. - Home

  • And as to the second point -- to wit, the failure on the part of the shipper to divest himself of the title and control of the property by a proper bill of lading -- see 3rd Phillimore 610-12, as follows, viz.: "In ordinary shipments of goods, unaffected by the foregoing principles, the question of proprietary interest often turns on minute circumstances and distinctions, the general principle being, that if they are going for account of the shipper, or subject _to his order or control_, the property is not divested _in transitu" _ &c.

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  • May he not learn to see and hear them without attempting, or desiring to _control_ them, more than he does his associates, his friends and neighbors on the physical plane, or allowing them to control him? "

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  • In his 1977 book, Dispatches, Michael Herr, who had covered the Vietnam War for Esquire magazine, applied the term control freak to “one of those people who always … had to know what was coming next.”

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  • From the Toolbox, drag and drop the Label control to the design surface.

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  • Such hate filled liberals like this are now in control, is it any wonder the country is a mess?

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