WordReference Random House Learner's Dictionary of American English © 2019
surge /sɜrdʒ/USA pronunciation   n., v.,  surged, surg•ing. 
n. [countable]
  1. a strong, forward movement like a wave:the surge of the crowd toward the stadium.
  2. a sudden, strong rush or burst:a surge of energy.
  3. Electricitya sudden rush or burst of electric current or voltage:Protect your computer against electrical surges.

v. [no object]
  1. Oceanographyto rise, roll, move, or swell forward in or like waves:Floodwater surged through the town.
  2. to rise as if by a heaving or swelling force, as of strong feeling:She could feel anger surging through her body.
  3. Electricity(esp. of electric current or voltage) to increase suddenly.

WordReference Random House Unabridged Dictionary of American English © 2019
surge  (sûrj),USA pronunciation  n., v.,  surged, surg•ing. 
  1. a strong, wavelike, forward movement, rush, or sweep:the onward surge of an angry mob.
  2. a strong, swelling, wavelike volume or body of something:a billowing surge of smoke.
  3. Oceanographythe rolling swell of the sea.
  4. Oceanographythe swelling and rolling sea:The surge crashed against the rocky coast.
  5. Oceanographya swelling wave;
  6. Meteorology
    • a widespread change in atmospheric pressure that is in addition to cyclonic and normal diurnal changes.
    • See  storm surge. 
  7. Electricity
    • a sudden rush or burst of current or voltage.
    • a violent oscillatory disturbance.
  8. Nautical, Naval Termsa slackening or slipping back, as of a rope or cable.
  9. [Mach.]
    • Mechanical Engineeringan uneven flow and strong momentum given to a fluid, as water in a tank, resulting in a rapid, temporary rise in pressure.
    • Mechanical Engineeringpulsating unevenness of motion in an engine or gas turbine.

  1. Nautical, Naval Terms(of a ship) to rise and fall, toss about, or move along on the waves:to surge at anchor.
  2. Oceanographyto rise, roll, move, or swell forward in or like waves:The sea surged against the shore. The crowd surged back and forth.
  3. to rise as if by a heaving or swelling force:Blood surged to his face.
  4. Electricity
    • to increase suddenly, as current or voltage.
    • to oscillate violently.
  5. Naval Terms[Naut.]
    • , Nautical, Naval Termsto slack off or loosen a rope or cable around a capstan or windlass.
    • , Nautical, Naval Termsto slip back, as a rope.
  6. Mechanical Engineering[Mach.]to move with pulsating unevenness, as something driven by an engine or gas turbine.

  1. Oceanographyto cause to surge or roll in or as in waves.
  2. Nautical, Naval Termsto slacken (a rope).
  • Latin surgere to spring up, arise, stand up
  • perh. 1480–90

Collins Concise English Dictionary © HarperCollins Publishers::

surge /sɜːdʒ/ n
  1. a strong rush or sweep; sudden increase: a surge of anger
  2. the rolling swell of the sea, esp after the passage of a large wave
  3. a heavy rolling motion or sound: the surge of the trumpets
  4. an undulating rolling surface, as of hills
  5. a billowing cloud or volume
  6. a temporary release or slackening of a rope or cable
  7. a large momentary increase in the voltage or current in an electric circuit
  8. an upward instability or unevenness in the power output of an engine
  1. (intransitive) (of waves, the sea, etc) to rise or roll with a heavy swelling motion
  2. (intransitive) to move like a heavy sea
  3. to slacken or temporarily release (a rope or cable) from a capstan or (of a rope, etc) to be slackened or released and slip back
  4. (intransitive) (of an electric current or voltage) to undergo a large momentary increase
  5. (transitive) rare to cause to move in or as if in a wave or waves
Etymology: 15th Century: from Latin surgere to rise, from sub- up + regere to lead

ˈsurger n

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