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Webster 1913 Edition

Permittance

Per-mit′tance

,

Noun.

The act of permitting; allowance; permission; leave.

Milton.

Webster 1828 Edition

Permittance

PERMIT'TANCE

,

Noun.

Allowance; forbearance of prohibition; permission.

Definition 2024

permittance

permittance

English

Noun

permittance ‎(plural permittances)

The act of permitting; allowance; permission; leave.
(Can we find and add a quotation of Milton to this entry?)
(electricity) The power of a dielectric to permit or enhance induction.