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[ad-mit-ns] /ædˈmɪt ns/
permission or right to enter:
admittance into the exhibit room.
an act of admitting.
actual entrance.
Electricity. the measure of the ability of a circuit to conduct an alternating current, consisting of two components, conductance and susceptance; the reciprocal of impedance, expressed in mhos. Symbol: Y.
Origin of admittance
1585-95; admit + -ance
Related forms
readmittance, noun
1. access. See entrance1 . Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for admittance
Contemporary Examples
Historical Examples
  • He came in looking rather astonished at this mode of admittance.

    Under False Pretences Adeline Sergeant
  • This led me to request a sight of that villa—a crown to the housekeeper got me admittance.

    Night and Morning, Complete Edward Bulwer-Lytton
  • She had taken her place in the salons of the rich and great without laying for her admittance with her honor or her good name.

    Tales of Two Countries Alexander Kielland
  • I let her in upon her tapping, and asking (half out of breath too) for admittance.

    Clarissa, Volume 2 (of 9) Samuel Richardson
  • And yet he was allowed to beg for admittance, and to be shoved out of court because he had no friends.

    Lady Anna Anthony Trollope
  • Ought you not to have exacted my admittance to the Comedie as a reparation for the insult?

British Dictionary definitions for admittance


the right or authority to enter
the act of giving entrance
(electrical engineering) the reciprocal of impedance, usually measured in siemens. It can be expressed as a complex quantity, the real part of which is the conductance and the imaginary part the susceptance y
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for admittance

1580s, "the action of admitting," formed in English from admit + -ance (if from Latin, it would have been *admittence; French uses accès in this sense). Used formerly in senses where admission now prevails. Admissure was used in this sense from mid-15c.

Online Etymology Dictionary, © 2010 Douglas Harper
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admittance in Science
A measure of the ability of a circuit or component to allow current flow when exposed to AC voltages (its AC conductance). It is equal to the reciprocal of the impedance of the circuit, just as conductivity is equal to the reciprocal of resistance, and is similarly measured in mhos.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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