"state by items, give the particulars of," 1833 (implied in itemized), American English, from item + -ize. Related: Itemizing. An earlier verb was item "make a note of" (c. 1600).

"a saying or doing again, or over and over again; repeated utterance or occurrence," late 15c., from Latin iterationem (nominative iteratio) "a repetition," noun of action from past-participle stem of iterare "do again, repeat," from iterum "again," from PIE *i-tero-, from pronominal root *i- (see yon).