Cleavage Meaning

"Mineral cleavage is a property of cohesion. The cleavage of the particles themselves and its attitude with reference to the plane of the greatest and mean dimensional axes help to determine the perfection of rock cleavage. The more nearly parallel to the greater dimensions of the particle, and the better the mineral cleavage, the better the rock cleavage produced." — 1905, Charles Kenneth Leith, “The Observed Relation of Secondary Rock Cleavage to the Parallel Arrangement of Mineral Particles”, in Rock Cleavage (United States Geological Survey Bulletin; no. 239), Washington, D.C.: Government Printing Office, →OCLC, page 51:

"[…] the forces — the internal cleavages over class differences, the desire for "the good life," the white racist flight from the die schwartze — which shattered Jewish working-class community in the generation before mine." — 1985 August 24, Robert Butler, “Sex More Punished Than Murder”, in Gay Community News, volume 13, number 7, page 5:

"It will become apparent from the following discussion that some of the various structures which are grouped together as cleavage may correspond to a schistosity and/or foliation. Accordingly, Wilson defines rock cleavage (and schistosity) as a planar structure, usually distinct from stratification, which permits rocks to be fractured or cleaved into thin slices. Dennis (1977) defines cleavage as a set of closely spaced secondary, planar, parallel fabric elements that impart mechanical anisotropy to a rock without apparent loss of cohesion. This latter definition appears more precise; however, as we shall see, it presents many difficulties in dealing with those forms of cleavage which are mainly defined by foliation or by fractures." — 1990, N[eville] J. Price, J[ohn] W. Cosgrove, “Rock Cleavage and Other Tectonic Fabrics”, in Analysis of Geological Structures, Cambridge: Cambridge University Press, →ISBN, page 434:

"Low-cut Restoration costumes worn by the Misses Lockwood and Roc (see cut) display too much "cleavage" (Johnston Office trade term for the shadowed depression dividing an actress' bosom into two distinct sections)." — 1946 August 5, “Cinema: Cleavage and the Code”, in Time:

"Wendy thought that her therapist was looking down her cleavage and said so. The therapist was mortified and chiefly felt guilty, unsure whether she had been looking down her patient's cleavage or not. On a reflex she assured Wendy that she was not looking down her cleavage and the matter appeared to rest." — 2003, Chess Denman, Sexuality: A Biopsychosocial Approach, Basingstoke, Hampshire: Palgrave Macmillan, →ISBN: