from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of or relating to hydrodynamics.
  • adjective Of, relating to, or operated by the force of liquid in motion.

from The Century Dictionary.

  • Pertaining to or derived from the force or motion of a fluid; relating to hydrodynamics.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Pertaining to, or derived from, the dynamical action of water of a liquid; of or pertaining to water power.
  • adjective friction produced by the viscosity of a liquid in motion.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective physics Of, or relating to the science of hydrodynamics
  • adjective Operated by the force of water in motion

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective of or relating to hydrodynamics


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  • "Marine biofouling is the process in which organisms such as barnacles problematically colonize underwater surfaces. When it happens to the hulls of ships, the vessels become less hydrodynamic, having to burn more fuel in order to move through the water."

    - Ben Coxworth, Electrolysis-based anti-biofouling system keeps hulls clean,, 7 Dec 2012.

    December 10, 2012