The shutting off of the propellant flow in a rocket, or the stopping of the combustion of the propellant.

1. A channel constructed to straighten a stream or to bypass large bends, thereby relieving an area normally subjected to flooding or channel erosion.

2. 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.

1. 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.

2. See <<cutoff frequency>>

1. A misfire in a round of shots because of severance of fuse owing to rock shear as adjacent charges explode.

2. 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.

A new, relatively short channel formed when a stream cuts through the neck of an oxbow or horseshoe bend.

1. The shutting off of the working fluid to an engine cylinder.

2. The time required for this process.

1. A quarryman's term for the direction along which the granite must be channeled, because it will not split.

2. The number of feet a bit may be used in a particular type of rock (as specified by the drill foreman).

3. Minimum percentage of mineral in an ore that can be mined profitably.

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.