adj \ik-ˈsīt-ə-ˌtōr-ē, -ˌtr-\

Definition of EXCITATORY

: tending to induce excitation (as of a neuron) <excitatory substances> <excitatory and inhibitory pathways from the brain—W. G. Van der Kloot>
: exhibiting, resulting from, related to, or produced by excitement or excitation <an excitatory postsynaptic potential>

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