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direct-acting

American  
[dih-rekt-ak-ting, dahy-] / dɪˈrɛktˌæk tɪŋ, daɪ- /

adjective

  1. (of a steam pump) having the steam pistons connected directly to the pump pistons without a crankshaft or flywheel.


Etymology

Origin of direct-acting

First recorded in 1855–60

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Hepatitis C, a slow-moving virus that can lead to liver cancer, cirrhosis and death, can now be cured in most cases with a few months of direct-acting antiviral medication.

From Los Angeles Times Jan. 22, 2023

For clinicians, Low says, that moment can’t come soon enough: “The world has been searching for a direct-acting antiviral drug for decades.”

From Science Magazine Oct. 6, 2021

Just as Muller's HIV work was being published, a new hepatitis C treatment known as direct-acting antivirals hit the market.

From Salon Dec. 26, 2020

Both trials provided 12 weeks of direct-acting antivirals to the patients at no cost.

From Scientific American Dec. 17, 2020

The direct-acting pumps have all the advantage of compactness and the disadvantage of being the most Page 141 inefficient of pumping machines used in mining.

From Principles of Mining Valuation, Organization and Administration by Hoover, Herbert

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