subclavio-|sʌbˈkleɪvɪəʊ|used as combining form of next, as in subˌclavio-ˈaxillary, pertaining to the subclavian and axillary arteries.1815J. Gordon Syst. Hum. Anat. I. 69 The Subclavio-Jugular Veins.1880Barwell Aneurism 38 A subclavio-axillary aneurism.