'endpoint-dependent' is a modern compound formed from 'endpoint' + 'dependent'. 'Endpoint' itself is built from 'end' (Old English 'end') and 'point' (from Old French 'point', ultimately Latin 'punctum'), while 'dependent' comes from Latin 'dependēre' via Old French/Medieval Latin.

'end' originates from Old English 'end'; 'point' comes from Old French 'point' (from Latin 'punctum'); 'dependent' comes from Latin 'dependēre' → Old French/Medieval Latin forms → Middle English 'dependen'/'dependent'. These elements were combined in modern English to form the compound adjective 'endpoint-dependent'.

Each element kept its basic sense ('end' = limit, 'point' = a precise location, 'dependent' = relying on). Combined, the compound came to mean 'relying on the endpoint(s)', a specialized modern technical sense used in science, engineering, and computing.