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Aeroponic (Wikipedia)
Lettuce and wheat grown in an aeroponic apparatus, NASA, 1998

Aeroponics is the process of growing plants in an air or mist environment without the use of soil or an aggregate medium. The word "aeroponic" is derived from the Greek meanings of aer (ἀήρ, "air") and ponos (πόνος, "labour"). Aeroponic culture differs from both conventional hydroponics, aquaponics, and in-vitro (plant tissue culture) growing. Unlike hydroponics, which uses a liquid nutrient solution as a growing medium and essential minerals to sustain plant growth, or aquaponics, which uses water and fish waste, aeroponics is conducted without a growing medium.[failed verification] It is sometimes considered[by whom?] a type of hydroponics, since water is used in aeroponics to transmit nutrients.

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