Main Entry: ex·cit·ato·ry

Pronunciation: \ik-ˈsīt-ə-ˌtōr-ē, -ˌtȯr-\

Function: adjective

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