1590s, from French squalide and directly from Latin squalidus "rough, coated with dirt, filthy," related to squales "filth," squalus "filthy," squalare "be covered with a rough, stiff layer, be coated with dirt, be filthy," of uncertain origin. Related: Squalidly; squalidness; squalidity.
1590s (implied in marbled), "to give (something) the veined and clouded appearance of marble," from marble (n.). Of meat with "veins" of fat, from 1770. Of books, "having the end papers or edges colored or stained in a conventional imitation of marble," 1670s. Related: Marbling.
It is done in a trough of water covered by a layer of gum tragacanth mixed with a little ox-gall. The fluid colors are sprinkled or spattered over this layer with a brush in the arrangement intended for use or in a manner which will admit of producing the desired figuration by drawing a brass comb over the surface. The dampened paper, held by the ends, is lightly passed in a curve over this surface, taking up the colors, and finished by sizing and burnishing or calendering. [Century Dictionary, 1895]
"innermost layer of the skin," 1836, from Latin corium "skin, hide, leather," related to cortex "bark," scortum "skin, hide," from PIE root *sker- (1) "to cut" (compare Sanskrit krtih "hide;" Old Church Slavonic scora "skin," Russian skora "hide," kora "bark;" Welsh corwg "boat made with leather skins," all from the same root).
late 14c., "membrane enclosing the eyeball;" c. 1400, "innermost coating of the back of the eyeball;" from Medieval Latin retina "the retina," probably from Vulgar Latin (tunica) *retina, literally "net-like tunic," on resemblance to the network of blood vessels at the back of the eye, and ultimately from Latin rete "net" (see rete).
The Vulgar Latin phrase might be Gerard of Cremona's 12c. translation of Arabic (tabaqa) shabakiyyah "netlike (layer)," itself probably a translation of Greek amphiblēstroeidēs (khiton).