Hessian UK /ˈhɛsiən/US /ˈhɛʃən/adjective 2noun 5forms 3 adjective2 •Of, from or relating to the state of Hesse, Germany. •Of or relating to the German mathematician Otto Hesse (1811–1874). noun5 •A native or inhabitant of the state of Hesse, Germany. •(UK) Ellipsis of Hessian cloth or Hessian fabric (“burlap, jute”). •(historical) A mercenary soldier, especially a German one who fought with the British in the American Revolutionary War. •Ellipsis of Hessian matrix. •Ellipsis of Hessian boot. formsHessians · more Hessian · most Hessian