The act of admitting. / Permission to enter, the power or right of entrance. / Actual entrance, reception. / (Britain, law) The act of giving possession of a copyhold estate.

plural of admittance

Someone who or something which admits.

Able to be admitted.

plural of admitter

The reciprocal of impedivity.

plural of admittivity

Archaic spelling of admittable.

(plumbing) a mechanical sewer vent that allows air to enter into the sewage system but does not allow exhaust of sewer gases, to aid the flow of sewage by providing air behind water, where a standard vent stack to atmosphere is not possible, by drawing in interior air but keeping harmful sewer gases contained.

plural of air admittance vent