a. rare. [f. TERRACE sb. (or med.L. terrāci-a) + -FORM.] Having the form of a terrace.
1864. Page, Adv. Text-bk. Phys. Geog., vi. 72. It is in this manner that hills composed of hard basalts and greenstones, alternating with soft tufas or stratified rocks, assume terraciform declivities.
1890. Smithsonian Inst. Rep., 72. The formation is sometimes fashioned into terraces; and some of its best developments in the District of Columbia … are terraciform.
