'allogeneous' originates from Greek, specifically the word 'allogenēs,' where 'allo-' meant 'other' and 'genēs' meant 'born.'

'allogenēs' transformed into the Latin word 'allogeneus,' and eventually became the modern English word 'allogeneous.'

Initially, it meant 'born of another kind,' but over time it evolved into its current meaning of 'originating from a different place or environment.'