attenuate
at·ten·u·ate
vt \ə-ˈten-yə-ˌwāt\at·ten·u·at·ed; at·ten·u·at·ing
Definition of ATTENUATE
: to reduce the severity of (a disease) or virulence or vitality of (a pathogenic agent) <a procedure to attenuate severe diabetes> <attenuated bacilli>
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