obliteratev. t.[L. obliteratus, p. p. of obliterare to obliterate; ob (see Ob-) + litera, littera, letter. See Letter.]1. To erase or blot out; to efface; to render undecipherable, as a writing.()2. To wear out; to remove or destroy utterly by any means; to render imperceptible; as, to obliterate ideas; to obliterate the monuments of antiquity.()The harsh and bitter feelings of this or that experience are slowly obliterated. (W. Black.)a. (Zol.) Scarcely distinct; -- applied to the markings of insects.()