Definition of organ

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Organ (n.) A natural part or structure in an animal or a plant, capable of performing some special action (termed its function), which is essential to the life or well-being of the whole; as, the heart, lungs, etc., are organs of animals; the root, stem, foliage, etc., are organs of plants..

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Collophore :: Collophore (n.) An adhesive marginal organ of the Lucernariae.
Otocyst :: Otocyst (n.) An auditory cyst or vesicle; one of the simple auditory organs of many invertebrates, containing a fluid and otoliths; also, the embryonic vesicle from which the parts of the internal ear of vertebrates are developed..
B :: B () is the second letter of the English alphabet. (See Guide to Pronunciation, // 196, 220.) It is etymologically related to p, v, f, w and m , letters representing sounds having a close organic affinity to its own sound; as in Eng. bursar and purser; Eng. bear and Lat. ferre; Eng. silver and Ger. silber; Lat. cubitum and It. gomito; Eng. seven, Anglo-Saxon seofon, Ger. sieben, Lat. septem, Gr.epta`, Sanskrit saptan. The form of letter B is Roman, from Greek B (Beta), of Semitic origin. The sma
Sarcina :: Sarcina (n.) A genus of bacteria found in various organic fluids, especially in those those of the stomach, associated with certain diseases. The individual organisms undergo division along two perpendicular partitions, so that multiplication takes place in two directions, giving groups of four cubical cells. Also used adjectively; as, a sarcina micrococcus; a sarcina group..
Displacement :: Displacement (n.) The process of extracting soluble substances from organic material and the like, whereby a quantity of saturated solvent is displaced, or removed, for another quantity of the solvent..
Improvisation :: Improvisation (n.) The act or art of composing and rendering music, poetry, and the like, extemporaneously; as, improvisation on the organ..
Leptocardia :: Leptocardia (n. pl.) The lowest class of Vertebrata, including only the Amphioxus. The heart is represented only by a simple pulsating vessel. The blood is colorless; the brain, renal organs, and limbs are wanting, and the backbone is represented only by a simple, unsegmented notochord. See Amphioxus..
Letter :: Letter (n.) A mark or character used as the representative of a sound, or of an articulation of the human organs of speech; a first element of written language..
Heart :: Heart (n.) The nearest the middle or center; the part most hidden and within; the inmost or most essential part of any body or system; the source of life and motion in any organization; the chief or vital portion; the center of activity, or of energetic or efficient action; as, the heart of a country, of a tree, etc..
Constitution :: Constitution (n.) The fundamental, organic law or principles of government of men, embodied in written documents, or implied in the institutions and usages of the country or society; also, a written instrument embodying such organic law, and laying down fundamental rules and principles for the conduct of affairs..
Initiate :: Initiate (v. t.) To introduce into a society or organization; to confer membership on; especially, to admit to a secret order with mysterious rites or ceremonies..
Semiring :: Semiring (n.) One of the incomplete rings of the upper part of the bronchial tubes of most birds. The semerings form an essential part of the syrinx, or musical organ, of singing birds..
Cromorna :: Cromorna (n.) A certain reed stop in the organ, of a quality of tone resembling that of the oboe..
Ketine :: Ketine (n.) One of a series of organic bases obtained by the reduction of certain isonitroso compounds of the ketones. In general they are unstable oily substances having a pungent aromatic odor.
Organule :: Organule (n.) One of the essential cells or elements of an organ. See Sense organule, under Sense..
Concoct :: Concoct (v. t.) To digest; to convert into nourishment by the organs of nutrition.
Tomopteris :: Tomopteris (n.) A genus of transparent marine annelids which swim actively at the surface of the sea. They have deeply divided or forked finlike organs (parapodia). This genus is the type of the order, or suborder, Gymnocopa..
Strepsipter :: Strepitores (n. pl.) A division of birds, including the clamatorial and picarian birds, which do not have well developed singing organs..
Afferent :: Afferent (a.) Bearing or conducting inwards to a part or organ; -- opposed to efferent; as, afferent vessels; afferent nerves, which convey sensations from the external organs to the brain..
Inadherent :: Inadherent (a.) Free; not connected with the other organs.
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