Definition of organ

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Organ (n.) A component part performing an essential office in the working of any complex machine; as, the cylinder, valves, crank, etc., are organs of the steam engine..

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Peltated :: Peltated (a.) Shield-shaped; scutiform; (Bot.) having the stem or support attached to the lower surface, instead of at the base or margin; -- said of a leaf or other organ..
Flute :: Flute (n.) A stop in an organ, having a flutelike sound..
Respirative :: Respirative (a.) Of or pertaining to respiration; as, respirative organs..
Petition :: Petition (n.) A formal written request addressed to an official person, or to an organized body, having power to grant it; specifically (Law), a supplication to government, in either of its branches, for the granting of a particular grace or right; -- in distinction from a memorial, which calls certain facts to mind; also, the written document..
Picric :: Picric (a.) Pertaining to, or designating, a strong organic acid (called picric acid), intensely bitter..
Hilum :: Hilum (n.) The part of a gland, or similar organ, where the blood vessels and nerves enter; the hilus; as, the hilum of the kidney..
Ophthalmite :: Ophthalmite (n.) An eyestalk; the organ which bears the compound eyes of decapod Crustacea.
Astringency :: Astringency (n.) The quality of being astringent; the power of contracting the parts of the body; that quality in medicines or other substances which causes contraction of the organic textures; as, the astringency of tannin..
Lithophyte :: Lithophyte (n.) A hard, or stony, plantlike organism, as the gorgonians, corals, and corallines, esp. those gorgonians having a calcareous axis. All the lithophytes except the corallines are animals..
Disband :: Disband (v. t.) To loose the bands of; to set free; to disunite; to scatter; to disperse; to break up the organization of; especially, to dismiss from military service; as, to disband an army..
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..
Leucoturic :: Leucoturic (a.) Pertaining to, or designating, a nitrogenous organic substance of the uric acid group, called leucoturic acid or oxalantin. See Oxalantin..
Homoplast :: Homoplast (n.) One of the plastids composing the idorgan of Haeckel; -- also called homoorgan.
Cephalization :: Cephalization (n.) Domination of the head in animal life as expressed in the physical structure; localization of important organs or parts in or near the head, in animal development..
Initiation :: Initiation (n.) The form or ceremony by which a person is introduced into any society; mode of entrance into an organized body; especially, the rite of admission into a secret society or order..
Eye :: Eye (n.) The organ of sight or vision. In man, and the vertebrates generally, it is properly the movable ball or globe in the orbit, but the term often includes the adjacent parts. In most invertebrates the years are immovable ocelli, or compound eyes made up of numerous ocelli. See Ocellus..
Stimulative :: Stimulation (n.) The irritating action of various agents (stimuli) on muscles, nerves, or a sensory end organ, by which activity is evoked; especially, the nervous impulse produced by various agents on nerves, or a sensory end organ, by which the part connected with the nerve is thrown into a state of activity; irritation..
Panspermy :: Panspermy (n.) The doctrine that all organisms must come from living parents; biogenesis; -- the opposite of spontaneous generation.
Quadricornous :: Quadricornous (a.) Having four horns, or hornlike organs; as, a quadricornous beetle..
Fenian :: Fenian (n.) A member of a secret organization, consisting mainly of Irishment, having for its aim the overthrow of English rule in ireland..
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