hydroponics

noun
UK /ˌhaɪdrəˈpɒnɪks/
US /ˌhaɪdrəˈpɑːnɪks/

Hydroponics is a way of growing plants in water instead of dirt.

The class used hydroponics to grow lettuce in a tank of water.


OTHER MEANINGS

2. The scientific study of growing plants without soil.

She studied hydroponics at the agricultural college.

3. A method used in space research to grow food for astronauts.

NASA tested hydroponics to feed crews on long missions.

4. A hobby of raising plants in nutrient-rich water at home.

His hydroponics setup fills the kitchen window with herbs.