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

---

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

---

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.

---

Related Words

See entrance ¹.

Other Word Forms

• readmittance noun

Etymology

Origin of admittance

First recorded in 1535–45; admit + -ance

Example Sentences

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

WallyGator, the emotional support alligator who enjoyed a moment of fame last year when he was denied admittance to a Major League Baseball game, is back in the news.

From New York Times • May 1, 2024

The tensions at Pomona, with just under 1,800 undergraduates and a 7% admittance rate, is the latest in a series of incidents at high-profile colleges and universities in the U.S.

From Los Angeles Times • Apr. 12, 2024

One former staffer said Ms Rees' apology "is an admittance of guilt, but for what?"

From BBC • Feb. 19, 2024

“I do. Not a tie links me to any living thing: not a claim do I possess to admittance under any roof in England.”

From "Jane Eyre" by Charlotte Brontë