'avianize' originates from the adjective 'avian' (from Latin 'avis' meaning 'bird') combined with the verb-forming suffix '-ize' (from Greek '-izein' via Latin and French), creating a verb meaning 'to make avian'.

'avian' came into English from Late Latin/Medieval Latin related to 'avis' (Latin for 'bird'), and the productive suffix '-ize' is ultimately from Greek '-izein', via Latin '-izare' and Old French '-iser', which entered English to form verbs; these elements were combined in English to form 'avianize'.

Initially formed to mean 'to make or become like a bird' (a literal morphological/figurative process), and it continues to carry that meaning in modern usage, often as a descriptive or creative/technical term.