English
externalness
From external + -ness.
A compound of external + -ness
Proto-Indo-European *h₁eǵʰsteros
Proto-Italic *eksteros
Latin exter ‘outward’
Medieval Latin externus ‘outward’
English external
Today it means
noun The state or quality of being external.
Language periods are conventional ranges, not dates for this word.
Etymograph / externalness