Dictionarysus•tained-re•leasePronunciation: (su-stānd'ri-lēs'), [key] —adj. Chem., Pharm. (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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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