English
intravariability
From intra- + variability.
Formed from intra- + variability
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁énteros ‘inside, within’
Latin *interus
Latin intrā ‘within’
English intra-
Old French variable
English variability
Today it means
noun variability within members of a group
Language periods are conventional ranges, not dates for this word.
Etymograph / intravariability