Definition of "obliteration"

obliteration

noun
countable and uncountable, plural obliterations
1. The total destruction of something.
  Quotations
  Stark before-and-after images reveal the obliteration of Bakhmut [title]
  2023 May 18, Matt Fidler, “Stark before-and-after images reveal the obliteration of Bakhmut”, in The Guardian‎
2. The concealing or covering of something.
  Quotations
  Winter, in coming to the country hereabout, advanced in well-marked stages, wherein might have been successively observed the retreat of the snakes, the transformation of the ferns, the filling of the pools, a rising of fogs, the embrowning by frost, the collapse of the fungi, and an obliteration by snow.
  1874, Thomas Hardy, chapter XI, in Far from the Madding Crowd. […], volumes (please specify |volume=I or II), London: Smith, Elder & Co., […]
3. The cancellation, erasure or deletion of something.
  Quotations
  Because he refused to protect his brother's name from obliteration, he acquires a derogatory nickname.
  2001, David L. Lieber and Jules Harlow, Etz Hayim: Torah and Commentary, page 1134
4. (medicine) The cancellation of the function, structure, or both of a vessel or organ; for example, the occlusion of the lumen of a duct, blood vessel, or lymphatic vessel, be it solely functional (as when squeezed by nearby mass effect or inflammation) or both structural and functional (as when clogged with thrombus, embolus, or fibrosis).