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Douglas Harper's Etymology Dictionary
hydroponics

1937, formed in English from hydro- + -ponics, from Greek ponein "to labor, toil," from ponos "labor" (see span (v.)). Related: Hydroponic (adj.).

Wiktionary
hydroponics

n. the cultivation of plants in a nutrient solution rather than in the soil

WordNet
hydroponics

n. a technique of growing plants (without soil) in water containing dissolved nutrients [syn: aquiculture, tank farming]

Wikipedia
Hydroponics

Hydroponics is a subset of hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral solution only, or in an inert medium, such as perlite or gravel. The nutrients in hydroponics can be from fish waste, normal nutrients, or duck manure.

Usage examples of "hydroponics".

During the next month I ordered regular inspections of the recyclers and hydroponics.

Pot, past the lot where the Triton Extravaganza was folding its tents to begin its mainland tour, past the wharves where the Shuttle Boat was pulling in with its load of workers from the Hydroponics Gardens.

And in theory we might even have managed to survive a hypothetical total failure of the hydroponic farmbecause with part of his time the Zog also oversaw an experimental two-hectare half-meter-deep dirt farm that took up an entire deck, just above the Hydroponics Deck.

Visitors would leave first, followed by all those deemed nonessential: astronomers, mathematicians, chemists, hydroponics experts, entrepreneurs, recreation directors, general maintenance workers, and everyone else not needed to launch spacecraft or keep the power on.

One of the empty bubbles was also sealed and pressurized, and a living crew entered to set up the lights and hydroponics.

During the next month I ordered regular inspections of the recyclers and hydroponics.

He leaned back in his chair, in his lab, among the dying ecospheres and the hydroponics tanks, and swung his feet onto the lab bench.

Moonbase's agrotechnicians and nutritionists were responsible for the hydroponics crops.

The ship’s limited hydroponics space hadn’t begun to replace the air lost to space when the air lock blew out, and she wanted those now airless cargo spaces aired up so they could be inspected and the reserves replaced.

It is fashionable in the North to think of hydroponics, when it is thought of at all, as a device of growing turnips in a chemical solution, and so it is -- in an infinitely complicated way.

It is fashionable in the North to think of hydroponics, when it is thought of at all, as a device of growing turnips in a chemical solution, and so it is - in an infinitely complicated way.

It is fashionable in the North to think of hydroponics, when it is thought of at all, as a device of growing turnips in a chemical solution, and so it is-in an infinitely complicated way.

It is fashionable in the North to think of hydroponics, when it is thought of at all, as a device of growing turnips in a chemical solution, and so it is —.

He had already tried the hydroponics bay, the environmental science lab, stellar cartography, a shuttlebay, a torpedo tube, an empty escape pod, Picard’.

Stone was away they ate in his restaurant Mrs Fries was an excellent cook and she raised a great variety in her hydroponics garden.