neurotoxin Syllabification: (neu·ro·tox·in)Pronunciation: /ˈn(y)o͝orōˌtäksin/Definition of neurotoxin noun a poison that acts on the nervous system. Derivatives neurotoxicPronunciation: /ˌn(y)o͝orōˈtäksik/ adjective neurotoxicityPronunciation: /ˌn(y)o͝orōtäkˈsisitē/ noun neurotoxicologyPronunciation: /ˌn(y)o͝orōˌtäksiˈkäləjē/ noun neurotoxin in other Oxford dictionaries Definition of neurotoxin in the British & World English dictionary