undercut(redirected from retentive undercut)
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Forestry chiefly US and Canadian a notch cut in a tree trunk, to ensure a clean break in felling
In stonework, to cut away a lower part, leaving a projection above that serves the function of a drip. To rout a groove back from the edge of an overhanging member.
Undesirable lateral etching by chemicals in the fabrication of semiconductor devices.
Underside recess either cut or molded into an object so as to leave a topside lip or protuberance.
An unfilled groove melted into the base metal at the toe of a weld.
To fail to machine a part to a sufficient extent.
To cut below or in the lower part of a coal bed by chipping away the coal with a pick or mining machine; cutting is usually done on the level of the floor of the mine, extending laterally the entire face and 5 or 6 feet (1.5 or 1.8 meters) into the material.
1. In stonework, to cut away a lower part, leaving a projection above that serves the function of a drip.
2. To rout a groove or channel (a drip) back from the edge of an overhanging member.