axenicPronunciation: /eɪˈzɛnɪk/Definition of axenic adjective chiefly Botany relating to or denoting a culture that is free from living organisms other than the species required. Derivatives axenically adverb Origin: 1940s: from a- 'not' + Greek xenikos 'alien, strange' + -icaxenic in other Oxford dictionaries Definition of axenic in the US English dictionary