'absorption-promoting' originates from English, formed by combining the noun 'absorption' and the verb 'promote'. 'absorption' comes from Latin 'absorptio'/'absorbere', where 'ad-' meant 'toward' and 'sorbere' (or 'sorbere' related root) meant 'to suck in'; 'promote' comes from Latin 'promovere', where 'pro-' meant 'forward' and 'movere' meant 'to move'.

'absorption' descended from Latin 'absorbere' via Late Latin and Middle English into the modern English 'absorption', while 'promote' came from Latin 'promovere' through Old French and Middle English; the compound phrase 'absorption-promoting' is a straightforward modern English compound that combines these established elements.

Initially, 'absorption' referred to the act of 'taking in' or 'sucking in' and 'promote' to 'move forward' or 'encourage'; combined as 'absorption-promoting' it has come to mean 'encouraging or facilitating the taking in (of a substance)'.