the cultivation of plants by placing the roots in liquid nutrient solutions rather than in soil; soilless growth of plants.
"One learned article, however, described me as 'rooted in fluidity', which took me aback a little. 'Good Lord!' I cried out. 'That sounds as if I'm a hydroponic lettuce!'"
~Diana Wynne Jones
I love her. Good luck to all students in your finals!