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
The fundraising figures came in supplementary filings to the Federal Election Commission ahead of the June 23 primary covering the second quarter up to June 3.
—
Dave Goldiner, New York Daily News, 12 June 2026
Prices from around $980 per guest/night, including accommodation, and the women’s health pack, which is a supplementary cost, can be added to 7-, 10- or 14-night stays—for seven nights, the pack would cost around $1,500 on top of the $5,000 Rebalance & Energize program, for instance.
—Rachel Ingram, Robb Report, 7 June 2026
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
See All Example Sentences for supplementary
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Dave Goldiner, New York Daily News, 12 June 2026
Prices from around $980 per guest/night, including accommodation, and the women’s health pack, which is a supplementary cost, can be added to 7-, 10- or 14-night stays—for seven nights, the pack would cost around $1,500 on top of the $5,000 Rebalance & Energize program, for instance.
—Rachel Ingram, Robb Report, 7 June 2026
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
See All Example Sentences for supplementary
Cite this Entry
“Supplementary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supplementary. Accessed 20 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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