Admittance

n. act of bringing in; right to enter

In electrical engineering, the admittance (Y) is the inverse of the impedance (Z). The SI unit of admittance is the siemens. Oliver Heaviside coined the term in December 1887. where Y is the admittance, measured in siemens Z is the impedance, measured in ohmsNote that the synonymous unit mho, and the symbol ℧ (an upside-down Omega Ω), are also in common use.
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Noun
1. the right to enter
(synonym) entree, access, accession
(hypernym) right
(hyponym) door
(derivation) admit, let in, include
2. the act of admitting someone to enter; "the surgery was performed on his second admission to the clinic"
(synonym) admission
(hypernym) entrance, entering, entry, ingress, incoming
(hyponym) readmission

(n.)
The act of giving possession of a copyhold estate.
  

(n.)
The act of admitting.
  

(n.)
Permission to enter; the power or right of entrance; also, actual entrance; reception.
  

(n.)
Concession; admission; allowance; as, the admittance of an argument.
  

(n.)
Admissibility.
  

n.
پروانگي , اجازت