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.
Logic.
a.
any form of reasoning in which the conclusion, though supported by the premises, does not follow from them necessarily.
b.
the process of estimating the validity of observations of part of a class of facts as evidence for a proposition about the whole class.
c.
a conclusion reached by this process.
5.
Also called mathematical induction.Mathematics. 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.
Electricity,Magnetism. the 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. Compare electromagnetic induction, electrostatic induction.
8.
Embryology. the process or principle by which one part of the embryo influences the differentiation of another part.
9.
Biochemistry. the synthesis of an enzyme in response to an increased concentration of its substrate in the cell.
10.
an 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.
[Origin: 1350–1400; ME induccio(u)n < L inductiōn- (s. of inductiō). See induct, -ion]
induction, in electricity and magnetism, common name for three distinct phenomena. Electromagnetic induction is the production of an electromotive force (emf) in a conductor as a result of a changing magnetic field about the conductor and is the most important of the three phenomena. It was discovered in 1831 by Michael Faraday and independently by Joseph Henry. Variation in the field around a conductor may be produced by relative motion between the conductor and the source of the magnetic field, as in an electric generator, or by varying the strength of the entire field, so that the field around the conductor is also changing. Since a magnetic field is produced around a current-carrying conductor, such a field can be changed by changing the current. Thus, if the conductor in which an emf is to be induced is part of an electric circuit, the induction can be caused by changing the current in that circuit; this is called self-induction. The induced emf is always such that it opposes the change that gives rise to it, according to Lenz's law. Changing the current in a given circuit can also induce an emf in another, nearby circuit unconnected with the original circuit; this type of electromagnetic induction, called mutual induction, is the basis of the transformer. Electrostatic induction is the production of an unbalanced electric charge on an uncharged metallic body as a result of a charged body being brought near it without touching it. If the charged body is positively charged, electrons in the uncharged body will be attracted toward it; if the opposite end of the body is then grounded, electrons will flow onto it to replace those drawn to the other end, the body thus acquiring a negative charge after the ground connection is broken. A similar procedure can be used to produce a positive charge on the uncharged body when a negatively charged body is brought near it. See electricity. Magnetic induction is the production of a magnetic field in a piece of unmagnetized iron or other ferromagnetic substance when a magnet is brought near it. The magnet causes the individual particles of the iron, which act like tiny magnets, to line up so that the sample as a whole becomes magnetized. Most of this induced magnetism is lost when the magnet causing it is taken away. See magnetism.
![[P]](http://cache.lexico.com/g/r/premium_mh.gif){kind=small}
Audio Help [in-duhk-shuh