a large size of a pack of goods that is cheaper than the normal size
He bought the economy size, and saved 90 cents on the price.
economy-size in American English
(iˈkɑnəmiˌsaiz)
adjective
1.
larger in size and costing less per unit of measurement than a smaller size
an economy-size box of soap flakes
2.
smaller in size and costing less
economy-size cars
Also: economy-sized
Word origin
[1945–50]This word is first recorded in the period 1945–50. Other words that entered Englishat around the same time include: RNA, beeper, fail-safe, individual medley, spin-off