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 other molecules — hundreds of them — have been shelved, untested and relegated for now to the supplementary data sections of journal articles.
—
Henry Skinner, STAT, 5 Mar. 2026
Trustees also approved a supplementary retirement plan to the Public Agency Retirement Services (PARS) system.
—Julie Gallant, San Diego Union-Tribune, 1 Mar. 2026
More than anything, robotic models are supplementary household cleaning devices.
—Bestreviews, Mercury News, 18 Feb. 2026
With their top priority secured, Grisham returning to center field, Paul Goldschmidt recently re-signing for a reserve role, and some supplementary pieces retained or added, Judge ended up happy with the way the Yankees’ offseason concluded.
—Gary Phillips, New York Daily News, 16 Feb. 2026
See All Example Sentences for supplementary
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Henry Skinner, STAT, 5 Mar. 2026
Trustees also approved a supplementary retirement plan to the Public Agency Retirement Services (PARS) system.
—Julie Gallant, San Diego Union-Tribune, 1 Mar. 2026
More than anything, robotic models are supplementary household cleaning devices.
—Bestreviews, Mercury News, 18 Feb. 2026
With their top priority secured, Grisham returning to center field, Paul Goldschmidt recently re-signing for a reserve role, and some supplementary pieces retained or added, Judge ended up happy with the way the Yankees’ offseason concluded.
—Gary Phillips, New York Daily News, 16 Feb. 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 14 Mar. 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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