orˌbiculato- used as combining form of L. orbiculāt-us, orbiculate, in sense ‘orbiculately—’, as orbiculato-cordate, orˌbiculato-elliptical: cf. orbicular a. 4. 1852Dana Crust. i. 264 The..abdomen is very large orbiculato-elliptical.Ibid. 289 The form of the sternum is orbiculato-cordate.