The inverse of impedance. Usually denoted as "Y" in electrical equations, or 1/Z, Z being impedance. The unit value of admittance is commonly dubbed "mhos" (backwards spelling of ohms.) It is a measure of the lack of impedance in a circuit, system of circuits or a specific conductor. A short circuit should, ideally, have an admittance of infinity. An open circuit will have an ideal admittance of 0 mhos.
Z = 10 ohms
Y = 1/Z = 1/10 = 0.1 mhos

Student 1: What's admittance?
Student 2: I don't know. I just use 1/Z.
Student 1: Oh ok.

by core5 March 30, 2008
Get the admittance mug.
A combination of Admission and stupidity, often used by drunk women and college bro's
"I asked John if he slept with karen and got his Admittal!"
"Oh that's cool, I think it's probably about time you stopped drinking,"
by Androgeniousness March 29, 2010
Get the Admittal mug.
MILITARY - A formal, professional disclosure or confession provided in the interest of integrity and transparency, admitting to having made a mistake or engaged in acts of misconduct in one's past.
In order to enlist in the United States Army, I was compelled to formally submit a "self admittal" up the chain of command explaining in detail every law enforcement encounter I had in my past, and why I still believed it would be in the Army's best interests to consider me for enlistment and acceptance dispite my criminal background discrepancies.
by ajl1776 May 3, 2018
Get the admittal mug.