'antitragicus' originates from New Latin (anatomical Latin), ultimately from Greek elements: 'anti-' meaning 'opposite' and 'trágos' meaning 'goat' (the latter used in 'tragus' for the ear structure).

'antitragicus' developed from the anatomical formation in Late/Neo-Latin based on Greek 'antí' + 'trágos' (yielding a term equivalent to 'opposite the tragus') and was adopted into modern anatomical English as 'antitragicus'.

Initially it literally indicated 'opposite the tragus' (location-based name); this anatomical/localising sense has been retained and is the current meaning.