formation


formation
1. A f.; a structure of definite shape or cellular arrangement. 2. That which is formed. 3. The act of giving form and shape. SYN: formatio (1) [TA].
- concept f. in psychology, the learning to conceive and respond in terms of abstract ideas based upon an action or object.
- personality f. the life history associated with the development of individual patterns and of one's individuality.
- reaction f. in psychoanalysis, a postulated defense mechanism in which attitudes and behaviors that are adopted are the opposites of that which the individual would ordinarily be expected to express and actually feel at an unconscious level.
- reticular f. (RF) a massive but vaguely delimited neural apparatus composed of closely intermingled gray and white matter and extending throughout the central core of the brainstem and into the diencephalon; the term refers to the large neuronal population of the brainstem that does not compose motoneuronal cell groups or cell groups forming part of specific sensory conduction systems; its neurons generally have long dendrites and heterogeneous afferent connections, the reason why the f. is often called “nonspecific”; the reticular f. has complex, largely polysynaptic ascending and descending connections that play a role in the central control of autonomic (respiration, blood pressure, thermoregulation, etc.) and endocrine functions, as well as in bodily posture, skeletomuscular reflex activity, and general behavioral states such as alertness and sleep. SYN: formatio reticularis [TA], reticular substance (2), substantia reticularis (2).
- rouleaux f. the arrangement of red blood cells in fluid blood (or in diluted suspensions) with their biconcave surfaces in apposition, thereby forming groups that resemble stacks of coins. SYN: pseudoagglutination (2). [Fr. pl. of rouleau, a roll]
- symptom f. SYN: symptom substitution.

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for·ma·tion fȯr-'mā-shən n
1) an act of giving form or shape to something or of taking form: DEVELOPMENT
2) the manner in which a thing is formed: STRUCTURE

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for·ma·tion (for-maґshən) 1. the process of giving shape or form; the creation of an entity or of 2. a structure of definite shape. a structure of definite shape; see formatio.

Medical dictionary. 2011.

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  • formation — [ fɔrmasjɔ̃ ] n. f. • 1160; lat. formatio, de formare → former 1 ♦ Action de former, de se former; manière dont une chose se forme ou est formée. ⇒ composition, constitution, création, élaboration. Être en cours, en voie de formation, en… …   Encyclopédie Universelle

  • Formation En V — Oies canadiennes en formation en V La formation en V ou formation en chevron est une formation symétrique de vol souvent utilisé par les oiseaux migratoires dont les oies ou les canards, et même les cétacés. Elle est aussi utilisée lors des… …   Wikipédia en Français

  • Formation en v — Oies canadiennes en formation en V La formation en V ou formation en chevron est une formation symétrique de vol souvent utilisé par les oiseaux migratoires dont les oies ou les canards, et même les cétacés. Elle est aussi utilisée lors des… …   Wikipédia en Français

  • Formation — can refer to:* Aerobatic formation, aerobatics performed with several aircraft * Formation (military), a high level military organization * Formation (paper property), defining the fibre distribution within the paper sheet * Tactical formation,… …   Wikipedia

  • formation — for‧ma‧tion [fɔːˈmeɪʆn ǁ fɔːr ] noun [uncountable] the forming of a company, organization, or committee: • The government backs the formation of a single environment agency covering Scotland as well as England and Wales. see also capital… …   Financial and business terms

  • Formation — ist aus dem Lateinischen abgeleitet und steht für Bildung einer Form oder Gestaltung, Aufstellung. In einigen Fachgebieten hat das Wort spezielle Bedeutungen: In der Geologie bezeichnet es gut erkennbare Schichtungen oder typische Gesteinskörper… …   Deutsch Wikipedia

  • Formation — For*ma tion (f[o^]r*m[=a] sh[u^]n), n. [L. formatio: cf. F. formation.] 1. The act of giving form or shape to anything; a forming; a shaping. Beattie. [1913 Webster] 2. The manner in which a thing is formed; structure; construction; conformation; …   The Collaborative International Dictionary of English

  • formation — Formation. s. f. v. Action par laquelle une chose est formée, est produite. La formation de l enfant dans le ventre de la mere. Il se dit en termes de Grammaire pour signifier, La maniere dont un mot se forme d un autre mot. La formation d un… …   Dictionnaire de l'Académie française

  • Formation — Formation,die:⇨Truppeneinheit Formation 1.Truppenverband,Truppeneinheit,Truppenteil,Gliederung,Aufstellung,Zusammensetzung 2.Bildung,Gestaltung,Struktur,Gefüge,Beschaffenheit,Aufbau,Gepräge …   Das Wörterbuch der Synonyme

  • formation — [fôr mā′shən] n. [ME formacioun < OFr formation < L formatio < pp. of formare: see FORM] 1. a forming or being formed 2. a thing formed 3. the way in which something is formed or arranged; structure 4. an arrangement or positioning, as… …   English World dictionary

  • Formation — (v. lat.), 1) Bildung; bes. 2) eine Reihenfolge von Gesteinsmassen, welche sich durch eine überall gesetzmäßige Aufeinanderfolge der Schichten u. entweder durch gänzlichen Mangel an Versteinerungen od. durch das Vorkommen bestimmter… …   Pierer's Universal-Lexikon

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