English

altlang

Syllabic abbreviation of alternative language.

Equivalent to alt + -lang

Proto-Indo-European *h₂el- ‘to grow, nourish’

Proto-Indo-European *h₂eltós

Proto-Italic *altos

Latin altus ‘high’

English alt

Today it means

noun A constructed language created as an alternate history of a real language.

Language periods are conventional ranges, not dates for this word.