noun: hydroponics
  1. the process of growing plants in a soilless medium or water, with added nutrients but without soil.

    It’s commonly believed that the earliest known use of hydroponic techniques begun around 600 B.C. within the mysterious Hanging Gardens of Babylon, where freshly oxygenated water rich with nutrients was used to grow plants without soil and hydroponics was born.

1930s: from hydro- ‘of water’ + Greek ponos ‘labour’ + -ics.
It wasn’t until the 1930’s that hydroponics got its modern name when Dr. William Gericke perfected his hydroponic techniques, and decided to give them a name, combining the Greek words ‘hydros’ (water) and ‘ponos’ (working) into one word.