English
externalize
From external + -ize.
A compound of external + -ize
Proto-Indo-European *h₁eǵʰsteros
Proto-Italic *eksteros
Latin exter ‘outward’
Medieval Latin externus ‘outward’
English external
Today it means
verb To make something external or objective.
Language periods are conventional ranges, not dates for this word.
Etymograph / externalize