quantal(redirected from quantally)
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Biology Of or designating an all-or-none response or effect: a quantal reaction.
quantal(kwant′ăl) [L. quantum, how much + -al]
1. Pert. to quantum theory.
Pert. to a response to a stimulus marked by the presence or absence of a specific reaction, e.g., an all or none response.
pertaining to specific quantities; used usually in reference to drugs and their dose rates.
quantal drug-receptor relationship
the variation in effect observed with increasing doses of a drug.