A liquid or gel designed to support the growth of microorganisms, cells or small plants.
1
Cottle, meanwhile, was pouring careful amounts of liquid nutrient medium into the Petri dishes.
2
To make a low- nutrient medium for these hardy species, bracken compost was mixed with soil from the floor of abandoned quarries.
3
A tadpole kept supplied with enough thymus in a nutrient medium will swell into an extraordinary giant tadpole, but will not change into a frog.