verb (used with object), i·tem·ized, i·tem·iz·ing.
- to state by items; give the particulars of; list the individual units or parts of: to itemize an account.
- to list as an item or separate part: to itemize deductions on an income-tax return.
verb (used without object), i·tem·ized, i·tem·iz·ing.
- to compute an income-tax return by listing separately all assets, credits, allowable deductions, losses, etc.
- (tr) to put on a list or make a list of
v.1864, American English, from item + -ize. Related: Itemized; itemizing. Earlier verb was simply item (c.1600).