1673, a hybrid from waste (v.) + -age.

the process of wasting anything lost by wear or waste Wastage was a British term used during World War I. It was used to describe the severity of losses experienced during the war. On the quietest day [..]

The term wastage relates to misprinted or defective sheets or prints not fully modulated. During the print job, wastage will occur from the setting-up of the printing press, or during production due t [..]

(n) the process of wasting(n) anything lost by wear or waste

The proportion of an advertising campaign's expenditure or advertising weight which is not seen or heard by the specified target audience

The proportion of an advertising campaign's expenditure or advertising weight which is not seen or heard by the specified target audience

The expected loss in pips (2)

(uncountable) The amount or proportion of something that is wasted or lost by deterioration or other natural process ''The average wastage is 1.5% in the grocery department.'' ''Wastage from the [..]