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.

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Etymology

Origin of direct-acting

First recorded in 1855–60

Example Sentences

Hepatitis C can now be cured in the vast majority of cases by taking direct-acting antiviral medication for two to three months.

From Los Angeles Times • Jan. 1, 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

Two participants in one of Sise's trials weren't cured after a single course of direct-acting antivirals, Sise acknowledged, though both were cured after a subsequent course.

From Salon • Dec. 26, 2020

And whether a donor kidney is known to be hepatitis C-positive or not, the arrival of direct-acting antivirals has greatly minimized the risk from the hepatitis C virus, further rendering the term obsolete.

From Scientific American • Dec. 17, 2020

He could afford to be philosophical: it wasn't HIS vertical inverted triple-expansion direct-acting propeller.

From Love, the Fiddler by Osbourne, Lloyd