supplementary
adjective
sup·ple·men·ta·ry
ˌsə-plə-ˈmen-tə-rē 
-ˈmen-trē
1
: added or serving as a supplement : additional
supplementary reading
2
: being or relating to a supplement (see supplement entry 1 sense 3) or a supplementary angle
Examples of supplementary in a Sentence
a list of supplementary material for the class
the teacher's edition of the textbook comes with a lot of supplementary material
Recent Examples on the Web
This two-day rail journey ferries travelers through some of Western Canada’s most scenic pockets, with stops in Banff, Kamloops, and Jasper, and is a supplementary offering for the influx of travelers expected to visit Vancouver during the FIFA World Cup in June and July.
—
Jessica Puckett, Condé Nast Traveler, 1 June 2026
Prime Minister Sanae Takaichi said on May 25 the government will compile a $19 billion supplementary budget to support households grappling with soaring everyday costs driven by the Iran war.
—Lim Hui Jie, CNBC, 31 May 2026
American climber Tyler Andrews set a new speed record using supplementary oxygen on Mount Everest on Thursday, his team told AFP, summiting the world's highest peak an hour quicker than anyone before.
—CBS News, 28 May 2026
Follow the example of Sylvia Meagher, a divorcée who spent much of 1965 making an index for the twenty-six supplementary volumes of the Warren Report from her West Village apartment, taking a fine-tooth comb to eighteen thousand pages of hearings and exhibits about the JFK assassination.
—Dan Piepenbring, Harpers Magazine, 26 May 2026
See All Example Sentences for supplementary
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Jessica Puckett, Condé Nast Traveler, 1 June 2026
Prime Minister Sanae Takaichi said on May 25 the government will compile a $19 billion supplementary budget to support households grappling with soaring everyday costs driven by the Iran war.
—Lim Hui Jie, CNBC, 31 May 2026
American climber Tyler Andrews set a new speed record using supplementary oxygen on Mount Everest on Thursday, his team told AFP, summiting the world's highest peak an hour quicker than anyone before.
—CBS News, 28 May 2026
Follow the example of Sylvia Meagher, a divorcée who spent much of 1965 making an index for the twenty-six supplementary volumes of the Warren Report from her West Village apartment, taking a fine-tooth comb to eighteen thousand pages of hearings and exhibits about the JFK assassination.
—Dan Piepenbring, Harpers Magazine, 26 May 2026
See All Example Sentences for supplementary
Cite this Entry
“Supplementary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supplementary. Accessed 9 Jun. 2026.
Copy CitationKids Definition
supplementary
adjective
sup·ple·men·ta·ry
ˌsəp-lə-ˈment-ə-rē
-ˈmen-trē
1
: added as a supplement : additional
2
: being or relating to a supplement or a supplementary angle
Medical Definition
supplementary
adjective
sup·ple·men·ta·ry
ˌsəp-lə-ˈment-ə-rē, -ˈmen-trē
: added or serving as a supplement
supplementary vitamins
Legal Definition
supplementary
adjective
sup·ple·men·ta·ry
ˌsə-plə-ˈmen-tə-rē, -trē
: added or serving as a supplement
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