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单词 induction
释义

WordReference Random House Learner's Dictionary of American English © 2024
in•duc•tion /ɪnˈdʌkʃən/USA pronunciation   n. 
  1. [uncountable] the act of inducing.
  2. formal installation in an office, position, etc.: [uncountable]Induction will take place next week.[countable]Inductions normally take place during the spring.
  3. Philosophy (in logic) a process of reasoning in which individual facts are used to arrive at a general statement or conclusion:[uncountable]If you reason that Mary is dark-haired and Greek, and Bob is dark-haired and Greek, that therefore all Greeks are dark-haired, that is an example of induction.
  4. Electricity[uncountable] the process by which a body having electric or magnetic properties produces magnetism or an electric charge in a neighboring body without touching it.
See -duc-.
WordReference Random House Unabridged Dictionary of American English © 2024
in•duc•tion  (in dukshən),USA pronunciation n. 
  1. the act of inducing, bringing about, or causing:induction of the hypnotic state.
  2. the act of inducting;
    introduction;
    initiation.
  3. formal installation in an office, benefice, or the like.
  4. Philosophy[Logic.]
    • any form of reasoning in which the conclusion, though supported by the premises, does not follow from them necessarily.
    • the process of estimating the validity of observations of part of a class of facts as evidence for a proposition about the whole class.
    • a conclusion reached by this process.
  5. MathematicsAlso called mathematical induction. a method of proving a given property true for a set of numbers by proving it true for 1 and then true for an arbitrary positive integer by assuming the property true for all previous positive integers and applying the principle of mathematical induction.
  6. a presentation or bringing forward, as of facts or evidence.
  7. Electricitythe process by which a body having electric or magnetic properties produces magnetism, an electric charge, or an electromotive force in a neighboring body without contact. Cf. electromagnetic induction, electrostatic induction.
  8. Developmental Biology[Embryol.]the process or principle by which one part of the embryo influences the differentiation of another part.
  9. Biochemistrythe synthesis of an enzyme in response to an increased concentration of its substrate in the cell.
  10. Literaturean introductory unit in literary work, esp. in an early play;
    prelude or scene independent of the main performance but related to it.
  11. [Archaic.]a preface.
  • Latin inductiōn- (stem of inductiō). See induct, -ion
  • Middle English induccio(u)n 1350–1400
in•duction•less, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
induction /ɪnˈdʌkʃən/ n
  1. the act of inducting or state of being inducted
  2. the act of inducing
  3. (in an internal-combustion engine) the part of the action of a piston by which mixed air and fuel are drawn from the carburettor to the cylinder
  4. a process of reasoning, used esp in science, by which a general conclusion is drawn from a set of premises, based mainly on experience or experimental evidence. The conclusion goes beyond the information contained in the premises, and does not follow necessarily from them. Thus an inductive argument may be highly probable, yet lead from true premises to a false conclusion
  5. a conclusion reached by this process of reasoning
  6. the process by which electrical or magnetic properties are transferred, without physical contact, from one circuit or body to another
    See also inductance
  7. a method of proving a proposition that all integers have a property, by first proving that 1 has the property and then that if the integer n has it so has n + 1
  8. a formal introduction or entry into an office or position
  9. (as modifier): induction course, induction period
  10. US the formal enlistment of a civilian into military service

inˈductional adj
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更新时间:2024/11/10 19:15:54