(supplements, supplementing, supplemented)
1.
If you supplement something, you add something to it in order to improve it.
...people doing extra jobs outside their regular jobs to supplement their incomes...
I suggest supplementing your diet with vitamins E and A.
VERB: V n, V n with n
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Supplement is also a noun.
Business sponsorship must be a supplement to, not a substitute for, public funding.
N-COUNT: oft N to n
2.
A supplement is a pill that you take or a special kind of food that you eat in order to improve your health.
...a multiple vitamin and mineral supplement...
N-COUNT
3.
A supplement is a separate part of a magazine or newspaper, often dealing with a particular topic.
...a special supplement to a monthly financial magazine.
N-COUNT
4.
A supplement to a book is an additional section, written some time after the main text and published either at the end of the book or separately.
...the supplement to the Encyclopedia Britannica.
N-COUNT: oft N to n
5.
A supplement is an extra amount of money that you pay in order to obtain special facilities or services, for example when you are travelling or staying at a hotel.
If you are travelling alone, the single room supplement is ?11 a night.
N-COUNT
6.
A supplement is an extra amount of money that is paid to someone, in addition to their normal pension or income.
Some people may be entitled to a housing benefit supplement.
...people who need a supplement to their basic pension.
N-COUNT: usu N n, N to n