hydroponics
noun/ˌhaɪdrəˈpɒnɪks/
/ˌhaɪdrəˈpɑːnɪks/
[uncountable]- the process of growing plants in water or sand, rather than in soil compare aeroponicsWord Origin1930s: from hydro- ‘of water’ + Greek ponos ‘labour’ + -ics.
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hydroponics