| operation | 1. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral. "The pain and sickness caused by manna are the effects of its operation on the stomach." (Locke) "Speculative painting, without the assistance of manual operation, can never attain to perfection." (Dryden) 2. The method of working; mode of action. 3. That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations." 4. Effect produced; influence. "The bards . . . Had great operation on the vulgar." (Fuller) 5. <mathematics> Something to be done; some transformation to be made upon quantities, the transformation being indicated either by rules or symbols. 6. <surgery> Any methodical action of the hand, or of the hand with instruments, on the human body, to produce a curative or remedial effect, as in amputation, etc. Calculus of operations. See Calculus. Origin: L. Operatio: cf. F. Operation. Source: Websters Dictionary (01 Mar 1998) |
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| operations research | A group of techniques developed to apply scientific methods and tools to solve the problems of decision making in complex organizations and systems. Operations research searches for optimal solutions in situations of conflicting goals and makes use of mathematical models from which solutions for actual problems may be derived. (12 Dec 1998) |
| operative | 1. Having the power of acting; hence, exerting force, physical or moral; active in the production of effects; as, an operative motive. "It holds in all operative principles." (South) 2. Producing the appropriate or designed effect; efficacious; as, an operative dose, rule, or penalty. 3. <surgery> Based upon, or consisting of, an operation or operations; as, operative surgery. Origin: Cf.L. Operativus, F. Operatif. Source: Websters Dictionary (01 Mar 1998) |
| operative dentistry | Usually, the individual restoration of teeth by means of metallic or nonmetallic materials. Synonym: restorative dentistry. (05 Mar 2000) |
| operative myxoedema | Myxoedema developing after thyroidectomy. (05 Mar 2000) |
| operator | <molecular biology> The site on DNA to which a specific repressor protein binds and prevents the initiation of transcription at the adjacent promoter. (18 Nov 1997) |
| operator gene | A gene with the function of activating the production of messenger RNA by one or more adjacent structural loci; part of the feedback system for determining the rate of production of an enzyme. (05 Mar 2000) |
| operator region | <genetics> DNA sequences which signal the initiation of transcription when derepressed. (12 Dec 1998) |
Synonyms : Operator Region, Operator Regions, Operator Region (Genetics), Operators (Genetics), Region, Operator, Region, Operator (Genetics), Regions, Operator, Regions, Operator (Genetics)
| operating room |
a room in a hospital equipped for the performance of surgical operations; "great care is taken to keep the operating rooms aseptic"
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| operation |
a planned activity involving many people performing various actions; "they organized a rescue operation"; "the biggest police operation in French history"; "running a restaurant is quite an operation"; "consolidate the companies various operations" a process or series of acts especially of a practical or mechanical nature involved in a particular form of work; "the operations in building a house"; "certain machine tool operations" the state of being in effect or being operative; "that rule is no longer in operation" a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery" activity by a military or naval force (as a maneuver or campaign); "it was a joint operation of the navy and air force" (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction); "it can perform millions of operations per second" process or manner of functioning or operating; "the power of its engine determine its operation"; "the plane's operation in high winds"; "they compared the cooking performance of each oven"; "the jet's performance conformed to high standards" mathematical process: (mathematics) calculation by mathematical methods; "the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation"; "they were learning the basic operations of arithmetic" process: (psychology) the performance of some composite cognitive activity; an operation that affects mental contents; "the process of thinking"; "the cognitive operation of remembering" the activity of operating something (a machine or business etc.); "her smooth operation of the vehicle gave us a surprisingly comfortable ride"
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| operator |
(mathematics) a symbol that represents a function from functions to functions; "the integral operator" an agent that operates some apparatus or machine; "the operator of the switchboard" someone who owns or operates a business; "who is the operator of this franchise?" hustler: a shrewd or unscrupulous person who knows how to circumvent difficulties a speculator who trades aggressively on stock or commodity markets
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| operative |
being in force or having or exerting force; "operative regulations"; "the major tendencies operative in the American political system" of or relating to a surgical operation; "operative surgery" surgical: relating to or requiring or amenable to treatment by surgery especially as opposed to medicine; "a surgical appendix"; "a surgical procedure"; "operative dentistry" secret agent: a person secretly employed in espionage for a government effective; producing a desired effect; "the operative word" private detective: someone who can be employed as a detective to collect information running(a): (of e.g. a machine) performing or capable of performing; "in running (or working) order"; "a functional set of brakes"
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| operator gene |
a gene that activates the production of messenger RNA by adjacent structural genes
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| opera | usable for a specific purpose |
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| opera | fit or ready for use or service |
| opera | a patron of the opera |
| opera | a quantity upon which a mathematical operation is performed |
| opera | having influence or producing an effect |
| opera | conditioning in which an operant response is brought under stimulus control by virtue of presenting reinforcement contingent upon the occurrence of the operant response |
| opera | perform surgery on |
| opera | happen |
| opera | perform a movement in military or naval tactics in order to secure an advantage in attack or defense |
| opera | handle and cause to function |
| opera | keep engaged |
| opera | perform as expected when applied |