tachyphylaxis


tachy·phy·lax·is

noun \ˌtak-i-fi-ˈlak-səs\
plural tachy·phy·lax·es \-ˌsēz\

Definition of TACHYPHYLAXIS

: diminished response to later increments in a sequence of applications of a physiologically active substance (as the diminished pressor response that follows repeated injections of renin)

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