Touch the screen to activate the system. activate and then deactivate a mechanism
The camera is activated by pushing a button.
The bomb was activated by remote control.
Sunlight activates a chemical reaction in the plant's leaves.
vitamins that activate the growth of new cells
The President has activated the reserves. See More
Recent Examples on the WebBut just as Matisse worked hard to activate the negative space in his 1930s works, something about our present-day politics activates the historical background to this exhibition.
Sebastian Smee, Washington Post, 10 Nov. 2022 One reason: The bran diet induced a beneficial shift in gut bacteria toward species that produce short-chain fatty acids that might activate receptors in the kidneys and blood vessels in a way that benefits blood pressure regulation.
Julie Stewart, Men's Health, 30 Aug. 2022 The pursuing agent deactivated his emergency equipment before seeing an unmarked Benson Police Department vehicle ahead of him activate its emergency lights in an effort to stop the suspect vehicle.
José Ignacio Castañeda Perez, The Arizona Republic, 10 Aug. 2022 Some Democratic strategists have argued that the Dobbs ruling would activate voters in an otherwise impossible way for a party with a president whose approval numbers are under water in a cycle where the historical precedent is with Republicans.
Daniel Strauss, The New Republic, 2 Aug. 2022 So the researchers suggested that using THC frequently could activate that receptor in a way that leads to inflammation in blood vessels, which in turn can accelerate a buildup of plaque in the arteries that can lead to a heart attack.NBC News, 30 Apr. 2022 To that end, patients also score points, accompanied by lights and dings, as in video games, in order to activate the reward centers in their brains.New York Times, 26 Apr. 2022 The ability to selectively activate different segments of the ribs in order to breathe while consuming large prey would also help conserve energy.
Jennifer Ouellette, Ars Technica, 24 Mar. 2022 Minyon Moore, a veteran Democratic strategist and political director for former President Bill Clinton, will lead the efforts to activate outside advocacy groups in support of the nominee.
Phil Mattingly, CNN, 2 Feb. 2022 See More
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'activate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: to make (a substance) give off radioactive particles, give off light at low temperatures, be easily affected by light, or carry an electric charge under the influence of light or other electromagnetic radiation
: to treat (as carbon or alumina) so as to improve the amount of adsorption