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supplement

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1supplement/ˈsʌpləmənt/noun
pluralsupplements
1supplement
/ˈsʌpləmənt/
noun
pluralsupplements
Learner's definition of SUPPLEMENT  
[count]
: something that is added to something else in order to make it complete
: an extra part that is added to a book or newspaper
British  : an amount of money that must be paid in addition to the regular price
2supplement/ˈsʌpləˌmɛnt/verb
supplementssupplementedsupplementing
2supplement
/ˈsʌpləˌmɛnt/
verb
supplementssupplementedsupplementing
Learner's definition of SUPPLEMENT  
[+ object]
: to add something to (something) in order to make it complete

— supplementation

/ˌsʌpləˌmɛnˈteɪʃən/noun,[noncount]
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