exfoliation


exfoliation
1. Detachment and shedding of superficial cells of an epithelium or from any tissue surface. 2. Scaling or desquamation of the horny layer of epidermis, which varies in amount from minute quantities to shedding the entire integument. 3. Loss of deciduous teeth following physiological loss of root structure. [Mod. L. fr. L. ex, out, + folium, leaf]
- e. of lens sheetlike separation of the capsule of the lens; it may occur if the eyes are exposed to intense heat.

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ex·fo·li·a·tion (.)eks-.fō-lē-'ā-shən n the action or process of exfoliating: as
a) the peeling of the horny layer of the skin (as in some skin diseases)
b) the shedding of surface components (as cells from internal body surfaces)
c) the shedding of a superficial layer of bone or of a tooth or part of a tooth
ex·fo·li·a·tive eks-'fō-lē-.āt-iv adj

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n.
1. flaking off of the upper layers of the skin.
2. separation of a surface epithelium from the underlying tissue.
3. the natural shedding of primary teeth.
exfoliative adj.

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ex·fo·li·a·tion (eks-fo″le-aґshən) [L. exfoliatus, past part. of exfoliare to strip of leaves] 1. a falling off in scales or layers, such as the stratum corneum of the skin or a superficial layer of bone. 2. the removal of scales or flakes from the surface of the skin. 3. the normal loss of deciduous teeth following loss of their root structure.

Exfoliation of fingertips in subacute phase of Kawasaki disease.


Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • exfoliation — [ ɛksfɔljasjɔ̃ ] n. f. • 1478; lat. exfoliatio ♦ Le fait de s exfolier; son résultat. Exfoliation de l écorce d un arbre. Lamelles qui se détachent par exfoliation (écailles, plaques). ♢ Méd. Élimination, sous forme de lamelles, de certaines… …   Encyclopédie Universelle

  • Exfoliation — has several meanings: * Exfoliation (botany) describes the loss of leaves (or, in some cases, pieces of bark) from a plant. * Exfoliation (cosmetology), is a cosmetic technique aimed at removing dead skin cells from the face and body. *… …   Wikipedia

  • Exfoliation — Ex*fo li*a tion, n. [Cf. F. exfoliation.] The scaling off of a bone, a rock, or a mineral, etc.; the state of being exfoliated. [1913 Webster] …   The Collaborative International Dictionary of English

  • Exfoliation — Exfoliation. См. Расслоение. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Exfoliation — (v. lat.), Abblätterung; E. der Knochen, Abblätterung der Knochen, Trennung durch Brand (Nekrosis) abgestorbener, kleiner, blätteriger od. anderer Knochenstücke, als Heilproceß der Natur. Daher Exfoliations (Exfoliativ ) trepan, s.u. Trepan …   Pierer's Universal-Lexikon

  • Exfolĭation — (lat.), Abblätterung, Zerstörung von Organen, z. B. Knochen, so daß sich von denselben dünne, flächenhaft ausgedehnte Schichten abstoßen …   Meyers Großes Konversations-Lexikon

  • Exfoliation — (lat.), Abblätterung, Abschieferung der Knochen …   Kleines Konversations-Lexikon

  • Exfoliation — Exfoliation, lat., chirurg. Operation, bei welcher von einem harten Körper schichtenweise abgeschnitten wird …   Herders Conversations-Lexikon

  • Exfoliation —   [zu lateinisch folium »Blatt«, also eigentlich »Entblättern«] die, / en, spontane (unmerkliche) Abschilferung abgestorbener Deckzellen von Haut und Schleimhaut, krankhaft gesteigert bei entzündlichen Vorgängen und Tumoren. Die… …   Universal-Lexikon

  • exfoliation — early 15c., noun of action from L. exfoliare (see EXFOLIATE (Cf. exfoliate)) …   Etymology dictionary

  • exfoliation — /eks foh lee ay sheuhn/, n. 1. the act, state, or process of exfoliating. 2. the state of being exfoliated. 3. something that is exfoliated or scaled off. [1670 80; NL exfoliation (s. of exfoliatio). See EXFOLIATE, ION] * * * ▪ geology… …   Universalium


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