aflatoxinPronunciation: /ˌafləˈtɒksɪn/Definition of aflatoxin noun Chemistry any of a class of toxic compounds produced by certain moulds found in food, which can cause liver damage and cancer. These are produced by fungi of the Aspergillus flavus group, subdivision Deuteromycotina Origin: 1960s: from elements of the modern Latin taxonomic name (see above) + toxinaflatoxin in other Oxford dictionaries Definition of aflatoxin in the US English dictionary