'babyolatry' originates from English 'baby' (a word imitative in origin, used since Middle English) combined with Greek 'latreia' via the combining form '-latry / -olatry', where 'latreia' meant 'worship' or 'service'.

'baby' comes from Middle English 'babe'/'baby' (imitative origin). The Greek 'latreia' entered English in formations like 'idolatry' (Greek 'eidolon' + 'latreia') and produced the combining element '-latry'/'-olatry' in New Latin/modern English. The modern coinage 'babyolatry' was formed by combining 'baby' + the combining element '-olatry' to mean 'worship of babies'.

The roots originally meant 'infant' (baby) and 'worship/service' (latreia); the combined modern coinage has the narrower social meaning 'excessive adoration or idolization of babies'.