assimilation
Photosynthesis Pho`to*syn"the*sis, n. (Plant Physiol.) The process of constructive metabolism by which carbohydrates are formed from water vapor and the carbon dioxide of the air in the chlorophyll-containing tissues of plants exposed to the action of light. It was formerly called {assimilation}, but this is now commonly used as in animal physiology. The details of the process are not yet clearly known. Baeyer's theory is that the carbon dioxide is reduced to carbon monoxide, which, uniting with the hydrogen of the water in the cell, produces formaldehyde, the latter forming various sugars through polymerization. Vines suggests that the carbohydrates are secretion products of the chloroplasts, derived from decomposition of previously formed proteids. The food substances are usually quickly translocated, those that accumulate being changed to starch, which appears in the cells almost simultaneously with the sugars. The chloroplasts perform photosynthesis only in light and within a certain range of temperature, varying according to climate. This is the only way in which a plant is able to organize carbohydrates. All plants without a chlorophyll apparatus, as the fungi, must be parasitic or saprophytic. -- {Pho`to*syn*thet"ic}, a. -- {Pho`to*syn*thet"ic*al*ly}, adv. [Webster 1913 Suppl.]

The Collaborative International Dictionary of English. 2000.

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  • assimilation — [ asimilasjɔ̃ ] n. f. • 1503; assimulation 1374; lat. assimilatio, de assimilare → assimiler 1 ♦ Acte de l esprit qui considère (une chose) comme semblable (à une autre). ⇒ identification, rapprochement. L assimilation d une chose à une autre,… …   Encyclopédie Universelle

  • ASSIMILATION — ASSIMILATION. In general the sociocultural process in which the sense and consciousness of association with one national and cultural group changes to identification with another such group, so that the merged individual or group may partially or …   Encyclopedia of Judaism

  • Assimilation — (von lateinisch similis „ähnlich“) steht für: Assimilation (Biologie), die schrittweise erfolgende Stoffumwandlung körperfremder in körpereigene Stoffe, sowohl im Pflanzen als auch im Tierreich Assimilation (Lernpsychologie), die Integration… …   Deutsch Wikipedia

  • Assimilation — (from Latin assimilatio ; to render similar ) may refer to more than one article: *Assimilation (linguistics), a linguistic process by which a sound becomes similar to an adjacent sound *Cultural assimilation, the process whereby a minority group …   Wikipedia

  • Assimilation — As*sim i*la tion, n. [L. assimilatio: cf. F. assimilation.] 1. The act or process of assimilating or bringing to a resemblance, likeness, or identity; also, the state of being so assimilated; as, the assimilation of one sound to another. [1913… …   The Collaborative International Dictionary of English

  • Assimilation — Assimilation, die Aufnahme und Verarbeitung der Nährstoffe durch die Pflanze, insbesondere Aufnahme des Kohlenstoffs aus der Kohlensäure der atmosphärischen Luft und Einführung desselben in den Stoffwechsel. Nach der Einrichtung ihrer… …   Lexikon der gesamten Technik

  • Assimilation — Assimilation, d.i. Verähnlichung, heißt der physiologische Vorgang, durch welchen der aus der aufgenommenen Nahrung durch die Verdauung bereitete Milchsaft dem Blute allmählig ähnlicher gemacht und endlich ganz in solches umgewandelt wird. Auch… …   Herders Conversations-Lexikon

  • assimilation — [ə sim΄ə lā′shən] n. an assimilating or being assimilated; specif., a) the cultural absorption of a minority group into the main cultural body b) Linguis. a process in which a sound, influenced by a neighboring sound, tends to become like it in… …   English World dictionary

  • assimilation — assimilation. См. ассимиляция. (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.

  • Assimilation — (v. lat.), 1) Verähnlichung, Ähnlichmachung; 2) (Gramm.), in zusammengesetzten Wörtern die Verwandlung des Endconsonanten des ersten Wortes in den Anfangsconsonanten des zweiten, zur leichteren Aussprache, z.B. das Wort A. selbst für Adsimilation …   Pierer's Universal-Lexikon

  • Assimilation — (lat., »Verähnlichung«), der Vorgang, durch den Bestandteile der Nahrung innerhalb der lebenden Wesen zu Bestandteilen von deren Körper werden. Hierhin ist bei den Tieren zu rechnen die Verwandlung der im Verdauungskanal aus den genossenen… …   Meyers Großes Konversations-Lexikon

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