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

Synonyms

• accessorial
• accessory
• appurtenant
• auxiliary
• peripheral
• supplemental

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 patch is a supplementary fix for an earlier attack mitigated in iOS 17.2. —Kurt Knutsson, Cyberguy Report, Fox News, 14 Mar. 2025

It’s been around for more than a year, but a supplementary fix to the original one was needed. —David Phelan, Forbes, 12 Mar. 2025

They are best viewed as a supplementary tool in a broader skin care routine. —Brigitt Earley, Glamour, 11 Mar. 2025

Since the show aired, even more drama has continued with supplementary videos popping up daily on the ladies’ home turf: TikTok. —Alejandra Gularte, Vulture, 10 Mar. 2025

Word History

Etymology

supplement entry 1 + -ary entry 2

First Known Use

1667, in the meaning defined at sense 1

Phrases Containing supplementary

• supplementary angle

Rhymes for supplementary

• alimentary
• complimentary
• documentary
• parliamentary
• rudimentary
• sedimentary
• testamentary
• integumentary
• uncomplimentary
• unparliamentary
• interparliamentary
• metasedimentary

Kids 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