ikˈsīd.əˌtäksik adjective
Etymology: excite + -o- + toxic
: 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
• ex·ci·to·tox·ic·i·ty ̷ ̷ ˌ ̷ ̷ ̷ ̷ ˌ ̷ ̷ ˈsisəd.ē noun