Cultivation of plants in nutrient solution rather than in soil.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "hydroponics" in a sentence
"It applies a technique called hydroponics, where plants are grown in nutrient rich solutions instead of soil."
"Many horse owners recall another hydroponics system marketed 20 or so years ago in compact units, in which many people found mould grew."
"By Dr S.M. Alam and M. A.Khan THE hydroponics is a method of growing plants using mineral nutrients solution instead of soil."