n.
Pronunciation: ' s ə -pl ə -m ə nt
Function: noun
Etymology: Middle English, from Latin supplementum, from suppl ē re to fill up, complete ― more at SUPPLY
Date: 14th century
1 a : something that completes or makes an addition b : DIETARY SUPPLEMENT
2 : a part added to or issued as a continuation of a book or periodical to correct errors or make additions
3 : an angle or arc that when added to a given angle or arc equals 180°