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

Each game also comes with a glossy digital screenplay and an encyclopaedia book which adds another layer of insight into these influential titles; a supplementary addition that many modern remasters fail to include. —Joshua Lamb, Forbes, 28 Feb. 2025

Terra is first making and selling a low-carbon supplementary cementitious material that can be blended with traditional cement. —Katie Fehrenbacher, Axios, 18 Feb. 2025

However, the stunning property, which is comprised of a collection of villas set into a cliffside overlooking the sea, didn't provide every type of space the script required, so the showrunners set out to find some equally lavish supplementary shooting spots in the region. —Mackenzie Schmidt, People.com, 17 Feb. 2025

Junior Bryant Clark has filled a role as a supplementary scorer, most recently going off for 28 points on 12 of 12 shooting from the field in a 71-47 win over Sacred Heart Cathedral. —Joseph Dycus, The Mercury News, 14 Feb. 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