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[uhn-der-ruhn] /ˌʌn dərˈrʌn/
verb (used with object), underran, underrun, underrunning.
to run, pass, or go under.
Nautical. to pass beneath (a stretched rope, net, etc.) in a boat or the like for the purpose of inspection or repairs.
something that runs or passes underneath, as a current.
an instance of costing or spending less than estimated.
a production run of a manufactured or printed item below the quantity ordered.
Origin of underrun
1540-50; under- + run Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for underrun
  • The price: several recordable disks ruined because of buffer underrun.
  • One problem is to avoid the underrun type collisions with the safety bumper.
  • If the actual rate is less than the planned rate, too little mix is being placed and there is an underrun.
  • The percentage of underrun or overrun should be substantial enough to warrant contract time changes.
  • Increased expenses in the supervision and regulation and monetary policy areas slightly offset the underrun in the estimate.
  • It appears there is an underrun especially including all the longitudes and asphalt should joints.
  • No revision in the contract unit price will be allowed because of any overrun or underrun.
  • Final costs will normally require an adjustment to be made in the units overrun or underrun.

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