con·​trolled | \ kən-ˈtrōld How to pronounce controlled (audio) \

Definition of controlled

2 : regulated by law with regard to possession and use controlled drugs

Examples of controlled in a Sentence

Instead of arguing, they talked in a calm, controlled manner. The test was done under controlled conditions. The polar bears at the zoo live in a controlled environment.
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Recent Examples on the Web Dobbratz was arrested Tuesday on a tentative charge of endangering safety by use of a dangerous weapon with controlled substances, according to the state records. Ashley Luthern, Milwaukee Journal Sentinel, "2 Milwaukee police officers arrested on gun-related charges in separate incidents this week," 31 Jan. 2020 Some won’t want to hear it, but climate policy is not a solution for the problems of forest management, especially the need for controlled burns to reduce the fuel build-up that leads to catastrophic conflagrations. Holman W. Jenkins, WSJ, "Are Fires a Climate Wake-Up Call?," 22 Jan. 2020 Steffensen says one concern is that, as a result of the current fires, the government will send inexperienced people to set controlled burns, which could be disastrous for the landscape and future management policy. Popular Science, "The fire ‘time bomb’ is finally detonating on the world," 7 Jan. 2020 In something of a space ballet, the two side boosters reentered Earth's atmosphere, and then made controlled burns to land within meters of one another at sites along the Florida coast. Eric Bangeman, Ars Technica, "2019’s most commented stories on Ars Technica—and their top comments!," 25 Dec. 2019 The Nature Conservancy is working with ranchers to conduct controlled burns across the region that replicate how Native Americans historically managed the prairies. NBC News, "Saving Oklahoma's prairies, a vital weapon against climate change," 30 Nov. 2019 Satellite data like that from FIRMS doesn't give the cause or type of fire, which means things like controlled burns or brush fires appear the same to the eye as forest fires. Aj Willingham, CNN, "Yes, more fires are burning in sub-Saharan Africa than in Brazil. But context is important," 27 Aug. 2019 Roeseler said a series of controlled burns of sugar cane crop in Mexico would likely impact Houston more than the African dust. Jay R. Jordan, Houston Chronicle, "African dust in Houston? Hold your horses, says National Weather Service," 13 June 2019 Wallace was arrested Monday for exposing a child to an environment in which controlled substances are ingested, produced or distributed, authorities said. Carol Robinson |, al, "2 Etowah County newborns test positive for illicit drugs; mothers jailed," 8 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'controlled.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of controlled

1581, in the meaning defined at sense 1

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Time Traveler for controlled

Time Traveler

The first known use of controlled was in 1581

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Statistics for controlled

Last Updated

9 Feb 2020

Cite this Entry

“Controlled.” Dictionary, Merriam-Webster, Accessed 27 Feb. 2020.

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More Definitions for controlled


How to pronounce controlled (audio)

English Language Learners Definition of controlled

: not overly angry or emotional
: done or organized according to certain rules, instructions, or procedures
used to describe a drug that is illegal to have or use without permission from a doctor


con·​trolled | \ kən-ˈtrōld How to pronounce controlled (audio) \

Medical Definition of controlled

: regulated by law with regard to possession and use controlled drugs

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