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tr.v. un·der·ran (-răn′), un·der·run, un·der·run·ning, un·der·runs
1. To run, pass, or go beneath.
2. Nautical To haul (a line or cable) onto a boat for inspection or repair.
1. Something that runs under, as:
a. An amount or a quantity produced that is less than what has been estimated.
b. The difference between this amount or quantity and what has been estimated.
2. An undercurrent.


vb, -runs, -running, -ran or -run
1. (tr) to go beneath
2. (Nautical Terms) (tr) to check the hull of (a boat)
3. (Nautical Terms) (tr) to retract (a net or trawl)
4. (Broadcasting) (intr) (of a broadcast programme) to fall short of scheduled time
5. the degree to which a programme underruns
6. the action of going beneath
7. an undercurrent


(ˌʌn dərˈrʌn)

v. -ran, -run, -run•ning,
n. v.t.
1. to run, pass, or go under.
2. something that runs or passes underneath, as a current.
3. an instance of costing less than estimated.
4. a production run below the quantity ordered.
References in classic literature ?
The moonlight turns the lower strata to silver without a stain except where our shadow underruns us.
Mitsumi's CR-4809TE IDE CD-R/RW optical recorder features 24X CD-R write speeds, 12X CD-RW rewriting, a 2 megabyte buffer, and Oak's ExacLink(TM) buffer underrun technology.
The TEAC 24x10x40 also has technology in place to prevent buffer underrun errors insuring successful recordings with no failed discs.
The PX-760A has a 2 MB buffer and features Buffer Underrun Proof Technology to prevent buffer underrun errors and allow multi-tasking.
Oak's OTI-9797S controller employs advanced features to achieve one of the fastest overall recording times while still maintaining high reliability and buffer underrun protection.
The PX-740UF drive has a 2 MB buffer and features Buffer Underrun Proof Technology to prevent buffer underrun errors and allow multi-tasking.
Evans said, 'My forecast does not see inflation rising to our 2 percent target until 2018 -- for me, that's too far down the road given how long we have underrun our target.
Conformations such as heel contraction, underrun heels, club footedness, or medial/lateral hoof flaring will become more noticeable and perhaps develop into a cause for lameness if not addressed earlier in his life.
Corresponding with Japan's upgraded safety standards the Titan features an updated rear underrun protection device that prevents passenger vehicles from becoming pinned under the vehicle in the event of a rear-end collision.
Government cancelled penalties for underrun of power energy.
In words, Equation 1 states that the actual final price of the contract is the target profit plus the actual cost, but adjusted by the contractor's share of the overrun or underrun.