excitotoxic

adjective

ex·​ci·​to·​tox·​ic ik-ˌsīt-ə-ˈtäk-sik 

: being, involving, or resulting from the action of an agent that binds to a nerve cell receptor, stimulates the cell, and damages it or causes its death

excitotoxic damage to cortical interneurons

—R. C. Collins et al.

excitotoxicity

-(ˌ)täk-ˈsis-ə-tē 

noun

plural excitoxicities