'anti-lipid' is formed from the prefix 'anti-' (from Greek anti-, meaning 'against') + 'lipid' (from Greek lipos, meaning 'fat').

'lipid' entered scientific English in Neo-Latin/modern scientific vocabulary from Greek 'lipos' ('fat'); the productive prefix 'anti-' from Greek has been used in English compounds since Middle English and modern scientific coinages created compounds such as 'anti-lipid'.

Initially the elements meant 'against' + 'fat'; in modern usage the compound denotes agents or actions that oppose, reduce, or neutralize lipids (often in a medical/biochemical sense).