from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Hydroelectric.
  • n. Hydroelectric power.
  • n. A hydroelectric power plant.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. hydroelectric
  • n. hydroelectric power
  • n. electrical power supply; specifically : electrical power provided by a utility (as a publicly-owned one)
  • n. A spa.

from the GNU version of the Collaborative International Dictionary of English

  • n. A hydro-aëroplane.
  • n. hydroelectric power; -- also used attributively.

from The Century Dictionary and Cyclopedia

  • An element in many compound words of Greek origin, meaning ‘water.’ In chemical compounds other than hydrogen it usually represents hydrogen.


From Ancient Greek ὕδωρ (hudōr, "water"). (Wiktionary)


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