gibboso-|gɪˈbəʊsəʊ|modern combining form of L. gibbōsus gibbous, in terms denoting combination of the gibbous form with some other: see quots.1846Dana Zooph. (1848) 268 Incrusting and prominently gibbous or gibboso-lobate.Ibid. 342 Coarse gibboso-glomerate and angular.Ibid. 495 Subcespitose..gibboso-subramose.Ibid. 563 Gibboso-subglobose. Corallum having the cells shallow.