antivivisectionPronunciation: /ˌantɪˌvɪvɪˈsɛkʃ(ə)n/Definition of antivivisection adjective [attributive] opposed to the use of live animals for scientific research: antivivisection campaignersDerivatives antivivisectionism noun antivivisectionist noun & adjective antivivisection in other Oxford dictionaries Definition of antivivisection in the US English dictionary