[1] : The Collaborative International Dictionary of English v.0.48

vortex \vor"tex\, n.; pl. e. vortexes, l. vortices. l.
   vortex, vertex, -icis, fr. vortere, vertere, to turn. see
   vertex.
   1913 webster
   1. a mass of fluid, especially of a liquid, having a whirling
      or circular motion tending to form a cavity or vacuum in
      the center of the circle, and to draw in towards the
      center bodies subject to its action; the form assumed by a
      fluid in such motion; a whirlpool; an eddy.
      1913 webster

   2. cartesian system a supposed collection of particles of
      very subtile matter, endowed with a rapid rotary motion
      around an axis which was also the axis of a sun or a
      planet. descartes attempted to account for the formation
      of the universe, and the movements of the bodies composing
      it, by a theory of vortices.
      1913 webster

   3. zool. any one of numerous species of small turbellaria
      belonging to vortex and allied genera. see illustration
      in appendix.
      1913 webster

   vortex atom chem., a hypothetical ring-shaped mass of
      elementary matter in continuous vortical motion. it was
      conveniently regarded in certain early mathematical models
      as the typical form and structure of the chemical atom,
      but is no longer considered a useful model, having been
      superseded by quantum mechanics.

   vortex wheel, a kind of turbine.
      1913 webster +pjc
see also:
vortexes vortices vertex vortex vortex atom vortex wheel 

[2] : The Collaborative International Dictionary of English v.0.48

water wheel \wa"ter wheel`\
   1. any wheel for propelling machinery or for other purposes,
      that is made to rotate by the direct action of water; --
      called an overshot wheel when the water is applied at
      the top, an undershot wheel when at the bottom, a
      breast wheel when at an intermediate point; other forms
      are called reaction wheel, vortex wheel, turbine
      wheel, etc.
      1913 webster

   2. the paddle wheel of a steam vessel.
      1913 webster

   3. a wheel for raising water; a noria, or the like.
      1913 webster
see also:
overshot wheel undershot wheel breast wheel reaction wheel vortex wheel turbine wheel 

Vortex >> V Words
Vortex, definition of term: Vortex
vortex_pag1.html

Ratchet Wheel >> R Words
Ratchet Wheel, definition of term: Ratchet Wheel
ratchet+wheel_pag1.html

Prayer Wheel >> P Words
Prayer Wheel, definition of term: Prayer Wheel
prayer+wheel_pag1.html

Roulette Wheel >> R Words
Roulette Wheel, definition of term: Roulette Wheel
roulette+wheel_pag1.html

Potters Wheel >> P Words
Potters Wheel, definition of term: Potters Wheel
potters+wheel_pag1.html

Star Wheel >> S Words
Star Wheel, definition of term: Star Wheel
star+wheel_pag1.html

Water Wheel >> W Words
Water Wheel, definition of term: Water Wheel
water+wheel_pag1.html

Steering Wheel >> S Words
Steering Wheel, definition of term: Steering Wheel
steering+wheel_pag1.html

Pelton Wheel >> P Words
Pelton Wheel, definition of term: Pelton Wheel
pelton+wheel_pag1.html

Spinning Wheel >> S Words
Spinning Wheel, definition of term: Spinning Wheel
spinning+wheel_pag1.html

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