Wedging p. pr. & vb. n. : of Wedge

Example:
What is ice Wedging and when does chemical Wedging occur?

Taxonomy
engineering, mechanical engineering, blocks, building stones, holes, Dental Dictionary, Sci-Tech, Dictionary, Unanswered questions, wej, by hand, pneumatic drills, crevice, steel wedge, the block, stone, borehole, wedge-shaped.

Defination from the web:
wedging ( ′wejiŋ ) ( engineering ) A method used in quarrying to obtain large, regular blocks of building stones; a row of holes is drilled, either by ... The act of changing the course of a borehole by using a deflecting wedge. ...