Are yams and sweet potatoes the same?
c.1600, from Latin obliteratus, past participle of obliterare "cause to disappear, blot out, erase, efface," figuratively "cause to be forgotten," from ob "against" (see ob-) + littera (also litera) "letter, script" (see letter (n.)); abstracted from phrase literas scribere "write across letters, strike out letters." Related: Obliterated; obliterating.
obliterate o·blit·er·ate (ə-blĭt'ə-rāt', ō-blĭt'-)
v. o·blit·er·at·ed, o·blit·er·at·ing, o·blit·er·ates
To remove an organ or another body part completely, as by surgery, disease, or radiation.
To blot out, especially through filling of a natural space by fibrosis or inflammation.