1. The ensheathing, enfolding, or insertion of a structure within itself or another. 2. The state of being invaginated. SEE ALSO: introversion, intussusception.
- basilar i. SYN: platybasia.

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in·vag·i·na·tion -.vaj-ə-'nā-shən n
1) an act or process of invaginating: as
a) the formation of a gastrula by an infolding of part of the wall of the blastula
b) intestinal intussusception
2) an invaginated part

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1. the infolding of the wall of a solid structure to form a cavity. This occurs in some stages of the development of embryos.

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in·vag·i·na·tion (in-vaj″ĭ-naґshən) [L. invaginatio, from in within + vagina sheath] 1. the state of being or the process of becoming invaginated. 2. in embryology, a process by which (a) one region of a hollow, single-walled, spherical blastula caves in to form and line a new cavity in the now cup-shaped, double-walled gastrula, or (b) an ever-deepening pit develops into a diverticulum or tube from the surface into the tissues below. 3. intussusception.

Medical dictionary. 2011.

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  • invagination — [ ɛ̃vaʒinasjɔ̃ ] n. f. • 1765; du lat. mod., de 2. in et lat. vagina « gaine » ♦ Didact. Repliement, retournement d une partie concave. Pathol. Glissement en doigt de gant retourné d une partie d intestin dans une partie voisine. ⇒… …   Encyclopédie Universelle

  • Invagination — means to fold inward or to sheath. In biology, this can refer to a number of processes.*Invagination is the morphogenetic processes by which an embryo takes form, and is the initial step of gastrulation, the massive reorganization of the embryo… …   Wikipedia

  • Invagination — In*vag i*na tion, n. [L. pref. in + vagina sheath.] [1913 Webster] 1. (Biol.) The condition of an invaginated organ or part. [1913 Webster] 2. The inward movement of the wall of a tissue or cell, to form a cavity; also, the cavity thus formed.… …   The Collaborative International Dictionary of English

  • Invagination — ist ein Begriff aus der Biologie und der Medizin. Er wird als Beschreibung für die Einstülpung eines Bestandteils in einen anderen benutzt. Im Einzelnen bezeichnet die Invagination: in der Zellbiologie die Einstülpung von Zell oder Kernmembran in …   Deutsch Wikipedia

  • invagination — invagination. См. выпячивание. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Invagination — (v. lat,), so v.w. Intussusception …   Pierer's Universal-Lexikon

  • Invagination — (lat.), s. Darmverschluß …   Meyers Großes Konversations-Lexikon

  • Invagination — (neulat.), Einschiebung in eine Scheide; auch s.v.w. Einschiebung eines Darmes in den andern …   Kleines Konversations-Lexikon

  • Invagination — Invagination, Einstülpung ⇒ Gastrulation …   Deutsch wörterbuch der biologie

  • Invagination — In|va|gi|na|ti|on 〈[ va ] f. 20; Med.〉 Einstülpung eines Teils vom Darmrohr in den nächsten, bewirkt Darmverschluss; Sy Intussuszeption (1) [<lat. in „in, hinein“ + vagina „Scheide“] * * * Invagination   [zu lateinisch vagina »Scheide«] die, / …   Universal-Lexikon

  • invagination — noun 1. the condition of being folded inward or sheathed • Syn: ↑introversion • Derivationally related forms: ↑introvert (for: ↑introversion), ↑invaginate • Hypernyms: ↑ …   Useful english dictionary

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