cutoff

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cutoff

[′kət‚ȯf]
(aerospace engineering)
The shutting off of the propellant flow in a rocket, or the stopping of the combustion of the propellant.
(civil engineering)
A channel constructed to straighten a stream or to bypass large bends, thereby relieving an area normally subjected to flooding or channel erosion.
An impermeable wall, collar, or other structure placed beneath the base or within the abutments of a dam to prevent or reduce losses by seepage along otherwise smooth surfaces or through porous strata.
(electronics)
The minimum value of bias voltage, for a given combination of supply voltages, that just stops output current in an electron tube, transistor, or other active device.
(engineering)
A misfire in a round of shots because of severance of fuse owing to rock shear as adjacent charges explode.
The line on a plastic object formed by the meeting of the two halves of a compression mold. Also known as flash groove; pinch-off.
(geology)
A new, relatively short channel formed when a stream cuts through the neck of an oxbow or horseshoe bend.
(mechanical engineering)
The shutting off of the working fluid to an engine cylinder.
The time required for this process.
(mining engineering)
A quarryman's term for the direction along which the granite must be channeled, because it will not split.
The number of feet a bit may be used in a particular type of rock (as specified by the drill foreman).
Minimum percentage of mineral in an ore that can be mined profitably.
(physics)
Technique used when the contribution to the value of a physical quantity given by integration over a certain variable is absurd (in particular, when the contribution is infinite); involves cutting off the integral at some limit.

cutoff

1. The prescribed elevation at which the top of a drive pile is cut.
2. A structure, such as a wall, intended to eliminate or reduce percolation through porous strata.
References in periodicals archive ?
In numerous studies, in which different techniques and cut-off levels have been used, the sensitivity of D-dimer test in diagnosis of aortic dissection were found between 88-100% (6-19).
Since the purpose of workplace drug testing programs is to detect the use of illegal drugs, the agency raised the opiate test cut-off level to 2000 ng/mL to reduce the number of costly laboratory confirmations.
Instead, a simple positive or negative result is determined based on the cut-off levels of the test.
Roadside testing devices incorporate cut-off levels to avoid registering false positives through passive smoking or contamination and will enable police to determine if individuals are driving under the influence of drugs quickly.
Because the studies used varying cut-off levels for subclinical hypothyroidism, the group defined the condition as described in the Cardiovascular Health Study: a serum thyroid stimulating hormone (TSH) of 4.
Substance cut-off levels are generally the same as those used by the Department of Transportation and National Institute for Drug Abuse Standards.
When the Department of Transportation (DOT) lowered drug-testing cut-off levels for cocaine in 2010, the industry expected to see a jump in positivity rates.
The researchers examined 4,299 random samples from multiple national addiction treatment and recovery programs, and compared clinical results from urine drug tests using immunoassay (IA) cut-off levels versus liquid chromatography tandem mass spectrometry (LC-MS/MS).
Second, the cut-off levels for ALT, AST, and PLT might be different in a more heterogeneous cohort.
The cut-off levels set for hypertension are dependent more on historical acceptability than specificity and will inevitably lead to over-diagnosis and misaligned risk stratification.