agar

/ˈɑgər/

/ˈægɑ/

Definitions of agar

1. noun

   a colloidal extract of algae; used especially in culture media and as a gelling agent in foods
   synonyms: agar-agar

   type of:

   gum

   any of various substances (soluble in water) that exude from certain plants; they are gelatinous when moist but harden on drying
2. noun

   any culture medium that uses agar as the gelling agent
   synonyms: nutrient agar

   types:

   blood agar

   a culture medium containing whole blood as the nutrient

   type of:

   culture medium, medium

   (bacteriology) a nutrient substance (solid or liquid) that is used to cultivate micro-organisms