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
If Giolito declines, the Red Sox would receive a pick that would come in a supplementary round between the fourth and fifth in next year's draft.
—
Jon Vankin, MSNBC Newsweek, 31 Oct. 2025
But for those like Lapre, these services aren’t just supplementary.
—Madison Dapcevich, Outside, 30 Oct. 2025
Projects underway also include using hydrogen for supplementary power (rather than as primary propulsion for large, ocean-going cruise ships).
—Fran Golden, AFAR Media, 29 Oct. 2025
Organizations will remain responsible for all direct program costs, including artist fees, travel, honoraria, supplies, materials, food, beverages, additional AV and lighting equipment, and supplementary services such as extended hours, extra staffing or gallery activations.
—Noah Lyons, San Diego Union-Tribune, 28 Oct. 2025
See All Example Sentences for supplementary
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Jon Vankin, MSNBC Newsweek, 31 Oct. 2025
But for those like Lapre, these services aren’t just supplementary.
—Madison Dapcevich, Outside, 30 Oct. 2025
Projects underway also include using hydrogen for supplementary power (rather than as primary propulsion for large, ocean-going cruise ships).
—Fran Golden, AFAR Media, 29 Oct. 2025
Organizations will remain responsible for all direct program costs, including artist fees, travel, honoraria, supplies, materials, food, beverages, additional AV and lighting equipment, and supplementary services such as extended hours, extra staffing or gallery activations.
—Noah Lyons, San Diego Union-Tribune, 28 Oct. 2025
See All Example Sentences for supplementary
Cite this Entry
“Supplementary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supplementary. Accessed 10 Nov. 2025.
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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