| adduct | <chemistry, molecular biology> A compound produced by the mixing of two or more chemicals. Acomplex that forms when a chemical binds to a biological molecule, such as DNA or a protein. (06 May 1997) |
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| carcinogen | <chemistry, oncology> An agent capable of initiating development of malignant tumours. May be a chemical, a form of electromagnetic radiation or an inert solid body. (19 Jan 1998) |