UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ədˈmɪtəns/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ædˈmɪtns/ ,USA pronunciation: respelling(ad mitns)

WordReference Random House Learner's Dictionary of American English © 2020
ad•mit•tance /ædˈmɪtns/USA pronunciation   n. 
  1. [uncountable] permission to enter:couldn't gain admittance to the embassy.

WordReference Random House Unabridged Dictionary of American English © 2020
ad•mit•tance  (ad mitns),USA pronunciation n. 
  1. permission or right to enter:admittance into the exhibit room.
  2. an act of admitting.
  3. actual entrance.
  4. Electricitythe 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
  • admit + -ance 1585–95
    • 1.See corresponding entry in Unabridged access. See  entrance 1.

Collins Concise English Dictionary © HarperCollins Publishers::
admittance /ədˈmɪtəns/ n
  1. the right or authority to enter
  2. the act of giving entrance
  3. 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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