'anilino-' originates from Modern chemical/Latin usage, specifically from the word 'aniline', where 'anil' (from Portuguese 'anil', ultimately from Arabic 'al-nīl') meant 'indigo'.

'aniline' came into scientific usage via French 'aniline' (from Portuguese 'anil'), and the combining form 'anilino-' developed in Modern chemical nomenclature to indicate derivation from 'aniline'.

Initially, related words referred to the dye 'indigo' (through 'anil' meaning indigo), but over time the term shifted to name the compound 'aniline' and now the combining form 'anilino-' means 'derived from aniline' in chemical contexts.