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sustained-release

[ suh-steynd-ri-lees ]
/ səˈsteɪnd rɪˈlis /
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adjective Chemistry, Pharmacology.

(of a drug or fertilizer) capable of gradual release of an active agent over a period of time, allowing for a sustained effect; timed-release; long-acting; prolonged-action; slow-release.

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The rainy weather could not ________ my elated spirits on my graduation day.

Origin of sustained-release

First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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