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Definition of Differential medium
1. Noun. growth medium that allows two or more organisms to be distinguished from one another by some parameter, such as growth vs. no-growth, distinguishing colors, distinguishing morphologies, etc. ¹
¹ Source: wiktionary.com
Medical Definition of Differential medium
1. A medium which is used to differentiate different types of microorganisms based on their different colours or colony shapes. Examples of differential media are: Macconkey's agar and SS agar. (09 Oct 1997)