What is "corium"

Dermis \Der"mis\, n. [NL. See Derm.] (Anat.) The deep sensitive layer of the skin beneath the scarfskin or epidermis; -- called also true skin, derm, derma, corium, cutis, and enderon. See Skin, and Illust. in Appendix. [1913 Webster] ||

1650s, from Latin corium "skin, hide, leather," related to cortex "bark," scortum "skin, hide," from PIE root *(s)ker- (1) "to cut" (cognates: Sanskrit krtih "hide;" Old Church Slavonic scora "skin," Russian skora "hide," kora "bark;" Welsh corwg "boat made with leather skins;" Old English sceran "to cut, shear;" see shear (v.)). Related: Coriaceous.

Etymology 1 n. 1 (context anatomy English) The inner layer of skin, the dermis. 2 (context anatomy English) The deep layer of mucous membranes beneath the epithelium. 3 (context historical English) armour made of leather, particularly that used by the Romans. Etymology 2

n. (context nuclear physics English) The lavalike material produced in a nuclear meltdown.

1. n. the deep vascular inner layer of the skin [syn: dermis, derma]

2. [also: coria (pl)]

Corium may refer to:

• Corium, Latin term for the dermis, a skin layer
• Corium (entomology), the thickened leathery, basal portion of an insect forewing (hemelytron).
• Corium (moth), an insect genus
• Corium (nuclear reactor), the lava-like product resulting from a reactor core meltdown

The Three Mile Island reactor 2 after the meltdown.

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Corium, also called fuel containing material (FCM) or lava-like fuel containing material (LFCM), is a lava-like mixture of portions of a nuclear reactor core, formed during a nuclear meltdown, the most severe class of a nuclear reactor accident.

It consists of nuclear fuel, fission products, control rods, structural materials from the affected parts of the reactor, products of their chemical reaction with air, water and steam, and, in the event that the reactor vessel is breached, molten concrete from the floor of the reactor room.

The corium is the thickened, leathery, basal portion of an insect forewing or hemelytron in the order hemiptera. Specifically the inner cell of the basal portion is the corium

HEMELYTRA

The forewings of the winged aquatic bugs are modified into hemelytra (singular, hemelytron), in which the basal part is thickened and leathery and the apical part is membranous. The thickened region is divided into a corium and clavus. The membranous region has veins and the venation is of taxonomic importance. However, in many families, the distinction between the leathery and membranous regions of the hemelytron is not pronounced, and the wing tends to be more fully sclerotized (e.g., Pleidae) or more fully membranous (e.g., winged Gerridae).The hind wings are fully membranous and held beneath the hemelytra when at rest. Many adult aquatic bugs are brachypterous, micropterous, or apterous, having reduced wings or none at all. , however, it is common that entomologists refer to the entire basal portion of the wing as the corium..