Focus on the pronunciation of deletion
English definition of “deletion”
/dɪˈli·ʃən/ n [C/U]
› a part removed from a written or electronic text, or the act of removing such a part: [C] You will have to make some deletions to cut the article to 3000 words. › biology A deletion is also the loss of part of a chromosome (= structure containing the information that controls what plants and animals are like), or the chromosome that results from such a loss.