'natural-origin' originates from Latin and Old French elements, specifically the words 'naturalis' (from Latin 'natura') and 'origo' where 'natura' meant 'birth, nature' and 'origo' meant 'beginning, source'.

'natural' passed into English via Old French 'naturel' from Latin 'naturalis', and 'origin' came from Old French 'origine' and Latin 'origo'; the compound concept combining the ideas of 'natural' + 'origin' developed in modern English as 'natural-origin'.

Initially, the components meant 'inherent quality of nature' and 'a beginning or source'; over time the combined expression came to mean 'having its source in nature' or 'derived from natural sources'.