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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.

But in light of those numbers, some experts were disappointed to see fewer than 6,000 patients in the Medi-Cal program getting the direct-acting antiviral medications annually in recent years.

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

But generating these therapies—especially direct-acting, orally administered drugs that inactivate viruses—is time-consuming.

From Scientific American • Jul. 15, 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

Nearly all sea-going vessels built toward the close of the period here considered were screw-steamers, fitted with direct-acting, quick-working engines.

From A History of the Growth of the Steam-Engine by Thurston, Robert H.

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