infiltration

1. The act of permeating or penetrating into a substance, cell, or tissue; said of gases, fluids, or matter held in solution. 2. The gas, fluid, or dissolved matter that has entered any substance, cell, or tissue. SYN: infiltrate (2). 3. Injection of solution into tissues, as in i. anesthesia. 4. Extravasation of solutions intended for intravascular injection.
- adipose i. growth of normal adult fat cells in sites where they are not usually present.
- cellular i. migration of cells from their sources of origin, or direct extension of cells as a result of unusual growth and multiplication, thereby resulting in fairly well-defined foci, irregular accumulations, or diffusely distributed individual cells in the connective tissue and interstices of various organs and tissues; used especially with reference to such changes associated with inflammations and certain types of malignant neoplasms.
- epituberculous i. an i. superimposed upon a tuberculous lesion.
- fatty i. abnormal accumulation of fat droplets in the cytoplasm of cells, particularly of fat derived from outside the cells. SEE ALSO: fatty degeneration.
- gelatinous i. SYN: gray i..
- gray i. a term sometimes used for the relatively rapidly formed, semisolid, gray or gray-white exudate (chiefly necrotic cells and remnants of tissue, and macrophages) resulting from unusually acute, overwhelming, diffuse tuberculous infection in the lung. SYN: gelatinous i..
- lipomatous i. nonencapsulated adipose tissue forming a lipomalike mass, usually in the cardiac interatrial septum where it may cause arrhythmia and sudden death. SYN: lipomatous hypertrophy.
- paraneural i. SYN: perineural i..
- perineural i. i. adjacent to or along a nerve. SYN: paraneural i..

* * *

in·fil·tra·tion .in-(.)fil-'trā-shən n
1 a) the act or process of infiltrating
b) something that infiltrates <anesthetic drug \infiltration>
2) an abnormal bodily condition produced or characterized by infiltration

* * *

n.
1. the abnormal entry of a substance (infiltrate) into a cell, tissue, or organ. Examples of infiltrates are blood cells, cancer cells, fat, starch, or calcium and magnesium salts.
2. the injection of a local anaesthetic solution into the tissues to cause local anaesthesia. Infiltration anaesthesia is routinely used to anaesthetize upper teeth to allow dental procedures to be carried out.

* * *

in·fil·tra·tion (in″fil-traґshən) [in-1 + filtration] 1. the pathological accumulation in tissue or cells of substances not normal to it or in amounts in excess of the normal. 2. infiltrate (def. 2). 3. the deposition of a solution directly into tissue; see under anesthesia.

Medical dictionary. 2011.

Look at other dictionaries:

  • infiltration — [ ɛ̃filtrasjɔ̃ ] n. f. • v. 1370; de infiltrer 1 ♦ Action de s infiltrer. L infiltration des eaux de pluie dans le sol, à travers qqch. Spécialt Pénétration accidentelle d eau dans un mur, une paroi. Traces d infiltration. 2 ♦ Méd. Accumulation… …   Encyclopédie Universelle

  • Infiltration — may refer to:*Infiltration (HVAC), a heating, ventilation, and air conditioning (HVAC) term for air leakage into buildings *Infiltration (hydrology), downward movement of water through soil *Infiltration (medical), the diffusion or accumulation… …   Wikipedia

  • Infiltration — (v. franz.) steht für: Infiltration (Militär), verdeckte Spionage und Sabotage in feindlichen Strukturen Infiltrationstaktik, eine im Ersten Weltkrieg entwickelte Militärtaktik, siehe Oskar von Hutier Infiltration (Medizin), das Eindringen fester …   Deutsch Wikipedia

  • Infiltration — In fil*tra tion, n. [Cf. F. infiltration.] [1913 Webster] 1. The act or process of infiltrating, as of water into a porous substance, of a fluid into the cells of an organ or part of the body, or of persons into a hostile organization. [1913… …   The Collaborative International Dictionary of English

  • Infiltration [1] — Infiltration, das Eindringen von Minerallösungen in seine Hohlräume, Spalten, Klüfte, Haarrisse, Blasen, Drusen u.s.w. von Gesteinen und der Absatz des Minerals aus der Lösung in diesen Hohlräumen. Durch Infiltration entstanden zahlreiche… …   Lexikon der gesamten Technik

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

  • Infiltration — (Infiltrat, v. lat.), mehr od. weniger gleichmäßige Einlagerung zwischen die Elementartheile eines Gewebes mit Verdrängung desselben, wobei jedoch die Grenzen des Organs gewöhnlich nicht überschritten werden. Die I. ist zumeist entzündlichen… …   Pierer's Universal-Lexikon

  • Infiltration — (lat., »Einseihung«), die gleichmäßige Einlagerung von Krankheitsprodukten in die Gewebe, wodurch letztere meist dicker werden und fester anzufühlen sind. So spricht man namentlich von entzündlicher I., wo eine Ausschwitzungsmasse (Serum, Eiter… …   Meyers Großes Konversations-Lexikon

  • Infiltration [2] — Infiltration des Wassers, die mit einer oberflächlichen Ablagerung der Suspensionen verknüpfte Versickerung des Wassers in den Boden (vgl. Bodenphysik, Bd. 2, S. 115, III). Zur Feststellung des relativen Verhältnisses der Sickerwassermengen zu… …   Lexikon der gesamten Technik

  • Infiltration — (neulat.), Einseihung, Einflößung; das Eindringen; die gleichmäßige Einlagerung von Krankheitsprodukten (Eiter, Serum, Fett, Krebszellen) in die Substanz der Organe; infiltrieren, einseihen, einflößen; eindringen, sich ergießen …   Kleines Konversations-Lexikon

  • Infiltration — Infiltration, lat. dtsch., Einseihung; Anhäufung fremdartiger Flüssigkeiten im Zellgewebe; infiltriren, einseihen, einflößen …   Herders Conversations-Lexikon


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.