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
Strategic partnerships and supplementary initiatives ORNL provides material characterization and manufacturing expertise, Type One Energy acts as the primary industry developer, UT Knoxville contributes engineering talent, and TVA provides the physical infrastructure and site management.
—
Aman Tripathi, Interesting Engineering, 22 Jan. 2026
State lawmakers have set up potential supplementary funding from a car rental fee and oil and gas companies.
—Bruce Finley, Denver Post, 22 Jan. 2026
At the same time, keep your eyes open for part-time supplementary work as well as companies that may be more financially secure and able to pay a healthier wage.
—Harriette Cole, Mercury News, 22 Dec. 2025
The Taiwanese defense ministry said the sale — comprising artillery systems, antitank missiles, as well as spare parts for helicopters and antiship missiles — falls under the $40 billion supplementary defense budget announced by President Lai Ching-te in November.
—Lim Hui Jie, CNBC, 18 Dec. 2025
See All Example Sentences for supplementary
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Aman Tripathi, Interesting Engineering, 22 Jan. 2026
State lawmakers have set up potential supplementary funding from a car rental fee and oil and gas companies.
—Bruce Finley, Denver Post, 22 Jan. 2026
At the same time, keep your eyes open for part-time supplementary work as well as companies that may be more financially secure and able to pay a healthier wage.
—Harriette Cole, Mercury News, 22 Dec. 2025
The Taiwanese defense ministry said the sale — comprising artillery systems, antitank missiles, as well as spare parts for helicopters and antiship missiles — falls under the $40 billion supplementary defense budget announced by President Lai Ching-te in November.
—Lim Hui Jie, CNBC, 18 Dec. 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 1 Feb. 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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