secretion
1. Production by a cell or aggregation of cells (a gland) of a physiologically active substance and its movement out of the cell or organ in which it is formed. 2. The solid, liquid, or gaseous product of cellular or glandular activity that is stored in or used by the organism in which it is produced. Cf.:excretion. [L. secerno, pp. -cretus, to separate]
- cytocrine s. the transfer of secretory material from one cell to another, such as the transfer of melanin granules from melanocytes to epidermal cells.
- external s. a substance formed by a cell and transported outside the cell walls as a means of ridding the cell of the substance or as a messenger to affect the function of other cells.
- neurohumoral s. transmission of a nerve impulse across a synapse or to an end-organ by s. of a minute amount of a chemical transmitter such as acetylcholine.

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se·cre·tion si-'krē-shən n
1) the process of segregating, elaborating, and releasing some material either functionally specialized (as saliva) or isolated for excretion (as urine)
2) a product of secretion formed by an animal or plant esp one performing a specific useful function in the organism

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n.
1. the process by which a gland isolates constituents of the blood or tissue fluid and chemically alters them to produce a substance that it discharges for use by the body or excretes. Principal methods of secretion - apocrine, holocrine, and merocrine.
2. the substance that is produced by a gland.

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se·cre·tion (se-kreґshən) [L. secretio, from secernere to secrete] 1. the process of elaborating a specific product as a result of the activity of a gland; this activity may range from separating a specific substance of the blood to the elaboration of a new chemical substance. 2. material that is secreted.

Medical dictionary. 2011.

Look at other dictionaries:

  • sécrétion — [ sekresjɔ̃ ] n. f. • 1711; « séparation » 1495; lat. secretio « séparation, dissolution » 1 ♦ Phénomène physiologique par lequel un tissu produit une substance spécifique, qui peut soit s introduire dans le sang par osmose, soit s écouler à la… …   Encyclopédie Universelle

  • Secretion — is the process of segregating, elaborating and releasing chemicals from a cell, or a secreted chemical substance or amount of substance. In contrast to excretion, the substance may have a certain function, rather than being a waste product.In… …   Wikipedia

  • Secretion — Sécrétion Voir « sécrétion » sur le Wiktionnaire …   Wikipédia en Français

  • Secretion — Se*cre tion, n. [L. secretio: cf. F. s[ e]cr[ e]tion.] 1. The act of secreting or concealing; as, the secretion of dutiable goods. [1913 Webster] 2. (Physiol.) The act of secreting; the process by which material is separated from the blood… …   The Collaborative International Dictionary of English

  • secretion — (n.) 1640s, from Fr. sécrétion, from L. secretionem (nom. secretio) separation, noun of action from pp. stem of secernere to separate, set apart (see SECRET (Cf. secret)) …   Etymology dictionary

  • secretion — secretion. См. секреция. (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.

  • Secretion — (v. lat.), Absonderung. Secretionsgebilde (Secretorĭa orgăna), so v.w. Absonderungsorgane. Secretorisch, absondernd. Secretiv, absonderungsfähig. Secretivität, Absonderungsfähigkeit …   Pierer's Universal-Lexikon

  • Secretion — (vom lat. secernere, absondern, aus scheiden), in der Physiologie die Thätigkeit, wodurch aus dem Blute fortwährend Stoffe zur Ernährung und Erneuerung des Leibes abgesondert werden; vgl. Blut …   Herders Conversations-Lexikon

  • secretion — index concealment Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • secretion — ► NOUN 1) a process by which substances are produced and discharged from a cell, gland, or organ for a particular function in the organism or for excretion. 2) a substance discharged in such a way. ORIGIN Latin, separation , from secernere move… …   English terms dictionary

  • secretion — [si krē′shən] n. [MFr < L secretio, separation < secretus: see SECRET] 1. the act of hiding or concealing something 2. a) a process in which a gland, tissue, etc. produces a biochemical and releases it into the organism for special use by… …   English World dictionary

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