/ ˈæsɪteɪt; NAmE / noun
[ U ] a chemical made from acetic acid , used in making plastics, etc.
[ U ] a chemical used to make fibres which are used to make clothes, etc.
[ C ] a transparent plastic sheet that you can write or print sth on and show on a screen using an overhead projector
late 18th cent.: from acetic acid + -ate .