Virus, attenuated
To attenuate is to weaken or to make (or become) thin. The word derives from a combination of the Latin prefix "ad-," meaning "to" or "toward," and "tenuis," meaning "thin." The use of "attenuate" in medicine is not new. In the 16th century, eating dried figs was claimed to attenuate the body fluids. Now "attenuate" refers to procedures that weaken an agent of disease (a pathogen). An attenuated virus is a weakened, less vigorous virus. A vaccine against a viral disease can be made from an attenuated, less virulent strain of the virus, a virus capable of stimulating an immune response and creating immunity but not causing illness.

Medical dictionary. 2011.

Look at other dictionaries:

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  • Attenuated virus — To attenuate is to weaken or to make (or become) thin. The word derives from a combination of the Latin prefix ad , meaning to or toward, and tenuis, meaning thin. The use of attenuate in medicine is not new. In the 16th century, eating dried… …   Medical dictionary

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