noun (used with a singular verb)
Examples from the Web for hydroponics
The tomato has been widely used in experiments in solution-culture of plants, sometimes called "hydroponics."The Tomato|Paul Work
Then he moved toward the entrance to hydroponics and pulled out the ship speaker mike.
"All hands and passengers will assemble in hydroponics within five minutes," he announced.
I guess you'd say that there were a lot of jobs in the aquariums and the hydroponics gardens.Captives of the Flame|Samuel R. Delany
That expedition perished after less than a light-year when its hydroponics system failed.Control Group|Roger Dee