SUPPLEMENT

[noun] [C] - something which is added to something else in order to improve it or complete it; something extraThe money I get from teaching evening classes provides a supplement to my income from my job.We paid a supplement (= an extra amount of money) so that we could have a cabin on board the ship.Perhaps you should take a vitamin supplement.A supplement is also a part of a magazine or newspaper, either produced separately or as part of the magazine or newspaper.The Times Higher Education Supplementthe Sunday supplementsThe newspaper publishes a sports supplement every Monday.The magazine this month is running a special supplement, its 'A-Z of Safe Food'.A supplement to a book is an additional part of it, either produced separately or included at the end of the book, which contains information that was not available when the book was first produced.The dictionary has a supplement containing new words at the end of it.