admittance

American  

[ad-mit-ns] / ædˈmɪt ns /

noun

1. permission or right to enter.

   admittance into the exhibit room.

   Synonyms:

   access

2. an act of admitting.

3. actual entrance.

4. 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. Y

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admittance British  

/ ədˈmɪtəns /

noun

1. the right or authority to enter

2. the act of giving entrance

3.  y.  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

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admittance Scientific  

/ ăd-mĭt′ns /

1. 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.

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Related Words

See entrance ¹.

Other Word Forms

• readmittance
  noun

Etymology

Origin of admittance

First recorded in 1535–45; admit + -ance

Example Sentences

The arrangement helps keep admit rates low—regular decision admittance was a record-low 2.8%—while effectively boosting yield.

From The Wall Street Journal • May 1, 2026

Even with admittance into the inner circle as a spectator, documentary filmmakers can’t always peer close enough into their subject’s life.

From Salon • Aug. 26, 2025

The news of Davidson’s most recent admittance comes as venues in Florida and New Jersey announced the comedian’s upcoming shows there have been canceled due to “scheduling conflicts.”

From Los Angeles Times • Jul. 31, 2024

It wasn’t an actual admittance that he relayed the pitch to Moore on the 3-2 cutter.

From Seattle Times • May 22, 2024

He could have taken the easy route and resented my quick admittance into the Arcanum as many others did.

From "The Name of the Wind" by Patrick Rothfuss