'amygdalin-free' originates from Modern English, combining the noun 'amygdalin' (from New Latin 'amygdalinum' and Greek 'ἀμυγδάλη' where 'ἀμυγδάλη' meant 'almond') and the adjective 'free' (from Old English 'frēo' where 'frēo' meant 'not bound or exempt').

'amygdalin' changed from New Latin 'amygdalinum' and French 'amygdaline' and ultimately comes from Greek 'ἀμυγδάλη', while 'free' evolved from Old English 'frēo' through Middle English to the modern English 'free'; these parts combined in Modern English to form the compound adjective 'amygdalin-free'.

Initially, 'amygdalin' referred to a chemical associated with almonds and 'free' meant 'not bound or containing'; over time their combination retained the clear meaning 'without amygdalin' in modern usage.