Entry 1 sense Webster, 1913 Deletion /dĭl-ēsh'-ən/ · De·le·tion · IPA /dɪˈliːʃən/ 01 n. Act of deleting, blotting out, or erasing; destruction. 1. Act of deleting, blotting out, or erasing; destruction.[Obs.] “A total deletion of every person of the opposing party.” — Sir M. Hale.