An Etymological Dictionary of the German Language/gedunsen
gedunsen, adj., ‘bloated, puffed up,’ partic. of a lost str. vb. which is retained in ModHG. dialects (Hess. dinsen, ‘to draw ‘); comp. MidHG. dinsen, ‘to draw, tear, extend,’ OHG. dinsan; also Goth. *þinsan, atþinsan, ‘to draw.’ The Teut. root þens, pre-Teut. tens, corresponds to the Sans. root tans, ‘to draw,’ Lith. tęsti, ‘to draw, stretch.’ The root tens seems an extension of the root ten appearing in dehnen.