[kuh n-trohl] /kənˈtroʊl/
verb (used with object), controlled, controlling.
to exercise restraint or direction over; dominate; command: The car is difficult to control at high speeds.
That zone is controlled by enemy troops.
to hold in check; curb:
to control a horse; to control one’s emotions.
to test or verify (a scientific experiment) by a parallel experiment or other standard of comparison.
to eliminate or prevent the flourishing or spread of:
to control a forest fire.
Obsolete. to check or regulate (transactions), originally by means of a duplicate register.
the act or power of controlling; regulation; domination or command:
Who’s in control here?
the situation of being under the regulation, domination, or command of another:
The car is out of control.
check or restraint:
Her anger is under control.
a legal or official means of regulation or restraint:
to institute wage and price controls.
Statistics. (def 1).
a person who acts as a check; .
a device for regulating and guiding a machine, as a motor or airplane.
controls, a coordinated arrangement of such devices.
prevention of the flourishing or spread of something undesirable:
Baseball. the ability of a pitcher to throw the ball into the strike zone consistently:
The rookie pitcher has great power but no control.
Philately. any device printed on a postage or revenue stamp to authenticate it as a government issue or to identify it for bookkeeping purposes.
a spiritual agency believed to assist a medium at a séance.
the supervisor to whom an espionage agent reports when in the field.
control for, Statistics. to account for (variables in an analysis) by limiting the data under consideration to a comparison of like things:
to control for demographic factors.
verb (transitive) -trols, -trolling, -trolled
to command, direct, or rule: to control a country
to check, limit, curb, or regulate; restrain: to control one’s emotions, to control a fire
to regulate or operate (a machine)
to verify (a scientific experiment) by conducting a parallel experiment in which the variable being investigated is held constant or is compared with a standard
to restrict or regulate the authorized supply of (certain substances, such as drugs)
power to direct or determine: under control, out of control
a means of regulation or restraint; curb; check: a frontier control
(often pl) a device or mechanism for operating a car, aircraft, etc
a standard of comparison used in a statistical analysis or scientific experiment
(spiritualism) an agency believed to assist the medium in a séance
Also called control mark. a letter, or letter and number, printed on a sheet of postage stamps, indicating authenticity, date, and series of issue
one of a number of checkpoints on a car rally, orienteering course, etc, where competitors check in and their time, performance, etc, is recorded
early 14c., “to check, verify, regulate,” from Anglo-French contreroller “exert authority,” from Medieval Latin contrarotulus “a counter, register,” from Latin contra- “against” (see contra) + rotulus, diminutive of rota “wheel” (see roll (n.)). From a medieval method of checking accounts by a duplicate register. Sense of “dominate, direct” is mid-15c. Related: Controlled; controlling.
Control group in scientific experiments is attested from 1952 (from a sense of control attested since 1875).
1580s, from control (v.). Control freak is late 1960s slang.
control con·trol (kən-trōl’)
v. con·trolled, con·trol·ling, con·trols
A standard of comparison for checking or verifying the results of an experiment. In an experiment to test the effectiveness of a new drug, for example, one group of subjects (the control group) receives an inactive substance or placebo , while a comparison group receives the drug being tested.
- Control language
language (CL) The batch language for IBM RPG/38, used in conjunction with RPG III. See also OCL. (2000-04-08)
[kuh n-trohl] /kənˈtroʊl/ verb (used with object), controlled, controlling. 1. to exercise restraint or direction over; dominate; command: The car is difficult to control at high speeds. That zone is controlled by enemy troops. 2. to hold in check; curb: to control a horse; to control one’s emotions. 3. to test or verify (a scientific […]
noun 1. an experiment or trial that uses controls, usually separating the subjects into one or more control groups and experimental groups. noun a trial or experiment that includes a control (comparison) group; also called controlled study ; any trial or test of a hypothesis under carefully managed conditions
- Controlled explosion
noun 1. the deliberate detonation of an explosive device under strictly controlled circumstances