'auxocardia' originates from Greek, specifically from the prefix 'auxo-' (from Greek 'auxein') meaning 'increase' and 'kardia' meaning 'heart'.

'auxocardia' was formed in New Latin/medical New Latin from Greek elements 'auxo-' + 'kardia' and entered medical English as a technical term for heart enlargement.

Initially formed to mean 'an increasing/enlarging heart,' it has come to be used as a medical term meaning 'abnormal enlargement of the heart' (cardiomegaly).