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|Noun||1.||nutrient agar - any culture medium that uses agar as the gelling agent|
culture medium, medium - (bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms
agar-agar, agar - a colloidal extract of algae; used especially in culture media and as a gelling agent in foods
blood agar - a culture medium containing whole blood as the nutrient