Definitions
from The American Heritage® Dictionary of the English Language, 4th Edition
 n. The property of an electric circuit by which an electromotive force is induced in it as the result of a changing magnetic flux.
 n. A circuit element, typically a conducting coil, in which electromotive force is generated by electromagnetic induction.
from Wiktionary, Creative Commons Attribution/ShareAlike License
 n. The property of an electric circuit by which a voltage is induced in it by a changing magnetic field.
 n. The quantity of the resulting electromagnetic flux divided by the current that produces it, measured in henries (SI symbol: H.)
from the GNU version of the Collaborative International Dictionary of English
 n. Capacity for induction; the coefficient of selfinduction.
from The Century Dictionary and Cyclopedia
 n. Power of induction; specifically, the coefficient of selfinduction. See induction, 6.
 n. It is the property of an electric current in a circuit (called the inducing circuit) of producing a magnetic field surrounding the circuit, which when changing induces an electromotive force in a circuit surrounded by this field or a part thereof (called the induced circuit). If the induced and the inducing circuit are the same, the property is called selfinductance, otherwise mutual inductance. Unit inductance is the number of lines of magnetic force produced by unit current in the inducing circuit and interlinked with the conductor of the induced circuit: 10 times this unit is the practical unit of inductance, called a henry.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
 n. an electrical device (typically a conducting coil) that introduces inductance into a circuit
 n. an electrical phenomenon whereby an electromotive force (EMF) is generated in a closed circuit by a change in the flow of current
Etymologies
Sorry, no etymologies found.
Examples

Yes, I can't remember why we didn't go up a bit in inductance; it was largely a trial and error business really.

The latter equation indicates that, in a currentcarrying coil, an electromotive force is induced by the magnetic flux associated with the current in the coil; the magnitude of the electromotive force is proportional to the rate of current change DI/Dt. The proportionality factor is called inductance L (more precisely selfinductance).

The storage capacity for magnetic energy is called inductance of a coil.

Leakage inductance occurs when the magnetic flux does not fully couple to the secondary winding.

Resistance heater vs the inductance load of an A/C motor.

August 19, 2009 at 5:03 pm shesnailie: and not a word about stray inductance.

Also, I continually feared that performance was being degraded because the previous magnet was not turning off fast enough due to inductance effects in the coil.
Coyote Blog » Blog Archive » Science Project Idea: ElectroMagnetic Propulsion

Althouse and pals use "Henry" to mean a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second.
So you've perceived that it's been a "Henry"themed day on the blog.

Regular “old fashioned” incandescent light bulbs (which are “Resistive” in nature and exhibit very little AC inductance or capacitance and therefore no phase shift), have an AC Power Factor very close to “1.0”; therefore Real and Apparent Power are virtually the same.

Most of the new “magnetic motor” devices work by exploiting previously unexplored aspects of magnetism and/or inductance.
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