quantalPronunciation: /ˈkwɒnt(ə)l/Definition of quantal adjective technical composed of discrete units; varying in steps rather than continuously:a quantal release of neurotransmitter Physics relating to a quantum or quanta, or to quantum theory. chiefly Physiology relating to or denoting an all-or-none response or state. Derivatives quantally adverb Origin: early 20th century: from quantum + -alquantal in other Oxford dictionaries Definition of quantal in the US English dictionary
