[ oh-ver-presh-er ]
/ ˌoʊ vərˈprɛʃ ər /


pressure in excess of normal atmospheric pressure, as that caused by an explosion's shock wave or created in an accelerating airplane.

verb (used with object), o·ver·pres·sured, o·ver·pres·sur·ing.

to cause or expose to overpressure.
to make undue demands on by a regimen, work load, etc.: students overpressured with heavy academic schedules.


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Origin of overpressure

First recorded in 1635–45; over- + pressure

OTHER WORDS FROM overpressure

o·ver·pres·sur·i·za·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for overpressure

  • Forcing and overpressure have the same origin, and the same result upon alert and varied intellectual interest.

  • The laws of overpressure are at this moment acting slowly and silently in our midst.

    Z. Marcas|Honore de Balzac
  • I am getting on first rate with my Greek, and will do capital if my health does not break down with overpressure.

    My Lady Nicotine|J. M. Barrie
  • Under the overpressure on medical skill and time is bound to diminish tact and sympathy.

    A Poor Man's House|Stephen Sydney Reynolds

British Dictionary definitions for overpressure

/ (ˈəʊvəˌprɛʃə) /


the blast effect of a nuclear weapon expressed as an amount of pressure greater than normal barometric pressure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012