induration

1. The process of becoming extremely firm or hard, or having such physical features. 2. A focus or region of indurated tissue. SYN: sclerosis (1). [L. induratio (see indurated)]
- brown i. of the lung a condition characterized by firmness of the lungs, and a brown color associated with hemosiderin-pigmented macrophages in alveoli, consequent upon long-continued congestion due to heart disease. SYN: pigment i. of the lung.
- cyanotic i. i. related to persistent, chronic venous congestion in an organ or tissue, frequently resulting in fibrous thickening of the walls of the veins and eventual fibrosis of adjacent tissue; the affected tissue becomes firmer than normal, and tends to have an unusual, red-blue color.
- gray i. a condition occurring in lungs during and after pneumonic processes in which there is failure of resolution; there is a conspicuous increase in fibrous connective tissue in the walls of the alveoli, and also within the alveoli ( e.g., fibrous organization of exudate); in contrast to brown i., there is usually not a prominent degree of pigmentation, unless chronic passive congestion is also present.
- pigment i. of the lung SYN: brown i. of the lung.
- plastic i. sclerosis of corpus cavernosum of penis.
- red i. a condition observed in lungs in which there is an advanced degree of acute passive congestion, acute pneumonitis or a similar pathologic process.

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in·du·ra·tion .in-d(y)ə-'rā-shən n
1) an increase in the fibrous elements in tissue commonly associated with inflammation and marked by loss of elasticity and pliability: SCLEROSIS
2) a hardened mass or formation

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n.
abnormal hardening of a tissue or organ. See also sclerosis.

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in·du·ra·tion (in″du-raґshən) [L. induratio] 1. the quality of being hard. 2. the process of becoming hard; called also hardening and sclerosis. 3. an abnormally hard spot or place. indurative adj

Medical dictionary. 2011.

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  • induration — [ ɛ̃dyrasjɔ̃ ] n. f. • v. 1370; « endurcissement du cœur » v. 1300; lat. ecclés. induratio ♦ Méd. Durcissement d un tissu (⇒ sclérose). ♢ Partie indurée. ⇒ callosité. Les cors sont des indurations. ● induration nom féminin (bas latin induratio,… …   Encyclopédie Universelle

  • Induration — In du*ra tion, n. [Cf. F. induration, L. induratio hardness of heart.] [1913 Webster] 1. The act of hardening, or the process of growing hard. [1913 Webster] 2. State of being indurated, or of having become hard. [1913 Webster] 3. Hardness of… …   The Collaborative International Dictionary of English

  • Induration — (v. lat.), 1) Verhärtung der Gewebe des thierischen Körpers, vorzüglich der Drüsen des Gehörs, der Lunge etc.; 2) Verstockung …   Pierer's Universal-Lexikon

  • Induration — (lat.), Verhärtung …   Meyers Großes Konversations-Lexikon

  • Induration — Induration, lat. dtsch., Verstockung …   Herders Conversations-Lexikon

  • induration — (n.) late 14c., from O.Fr. induracion hardness, obstinacy (14c.) or directly from M.L. indurationem (nom. induratio) hardness (especially of the heart), noun of action from indurare (see ENDURE (Cf. endure)) …   Etymology dictionary

  • Induration — SignSymptom infobox Name = PAGENAME Caption = DiseasesDB = ICD10 = ICD10|R|23|4|r|20 ICD9 = ICD9|782.8 ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = Induration (in doo rā shən, dyoo ), a noun, means, in terms of pathology …   Wikipedia

  • Induration — Le phénomène d induration désigne le durcissement d un matériel organique ou inorganique, s accompagnant parfois de la transformation du matériel. Ainsi, un tissu biologique qui se durcit est dit induré ; l arkose est un grès feldspathique… …   Wikipédia en Français

  • induration — indurative, adj. /in doo ray sheuhn, dyoo /, n. 1. the act of indurating. 2. the state of being indurated. 3. Geol. a. lithification. b. hardening of rock by heat or pressure. 4. Pathol. a. a hardening of an area of the body as a reaction to… …   Universalium

  • induration — noun /ɪndjʊˈɹeɪʃən/ a) Hardness, or the process of becoming hard. The voice was harder than I had known, and not only in stony reaction to long floods of wholly just selfpity, also roughened with gin and smoke, perhaps also assimilated to New… …   Wiktionary

  • induration — (in du ra sion) s. f. Terme de médecine. Action de devenir dur. Induration du tissu cellulaire.    Partie indurée. Il y a des indurations dans le ventre. HISTORIQUE    XIVe s. •   Note que coagulacion de lait en la mammelle ne se fait pas… …   Dictionnaire de la Langue Française d'Émile Littré

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