ノビチョクノビチョクMeanings1nounnovichok (nerve agent)A highly toxic nerve agent developed in the Soviet Union. The term is used in news and security contexts.from Russianノビチョクは旧きゅうソ連れんで開かい発はつされた神しん経けい剤ざいだ。Novichok is a nerve agent developed in the former Soviet Union.