sup·​ple·​men·​ta·​ry | \ ˌsə-plə-ˈmen-tə-rē How to pronounce supplementary (audio) , -ˈmen-trē \

Definition of supplementary

1 : added or serving as a supplement : additional supplementary reading
2 : being or relating to a supplement or a supplementary angle

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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 In a trial dexamethasone, a cheap steroid, cut death rates among the most seriously ill patients (ie, those needing ventilation or supplementary oxygen). The Economist, "Week in charts Britain’s bungling of the pandemic," 19 June 2020 Blake Corum and Andre Seldon – as supplementary options. Evan Petzold, Detroit Free Press, "Michigan football has 'strong' special teams, expects 'huge year' from Giles Jackson," 30 May 2020 When nurses and doctors further use ventilators and dialysis with a Covid-19 patient, the machines serve as supplementary lungs and kidneys to give her immune system time to get sorted. Virginia Heffernan, Wired, "Metaphors Matter in a Time of Pandemic," 19 May 2020 The new money, coming only weeks after the passage of a first supplementary budget, is expected to provide rent support for small businesses and bigger subsidies for firms that don’t fire workers. Fortune, "Japan enters recession—but is doing less badly than peers like U.S., Canada," 18 May 2020 A few weeks later, the attorney filed supplementary evidence supporting that motion, and the immigration judge agreed to reopen the boy’s case. Lomi Kriel, ProPublica, "The Trump Administration Is Rushing Deportations of Migrant Children During Coronavirus," 18 May 2020 The four drugs or combinations will be compared to what is called standard of care — the regular support hospitals treating these patients use now, such as supplementary oxygen when needed. Helen Branswell, STAT, "WHO to launch multinational trial to jumpstart search for coronavirus drugs," 18 Mar. 2020 Initially, the district rolled out its online content for middle and elementary school students as only supplementary. Emily Goodykoontz, Anchorage Daily News, "Anchorage schools plan summer programs to counter growing learning gap," 12 May 2020 Although Minecraft isn’t strictly part of the curriculum, this move still meant teachers could continue using Minecraft as a supplementary tool. Elise Favis, Washington Post, "With coronavirus closing schools, here’s how video games are helping teachers," 15 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'supplementary.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of supplementary

1667, in the meaning defined at sense 1

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Time Traveler for supplementary

Time Traveler

The first known use of supplementary was in 1667

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Statistics for supplementary

Last Updated

24 Jun 2020

Cite this Entry

“Supplementary.” Dictionary, Merriam-Webster, Accessed 5 Jul. 2020.

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More Definitions for supplementary


sup·​ple·​men·​ta·​ry | \ ˌsə-plə-ˈmen-tə-rē How to pronounce supplementary (audio) \

Kids Definition of supplementary

: added to something else : additional supplementary income


sup·​ple·​men·​ta·​ry | \ ˌsəp-lə-ˈment-ə-rē, -ˈmen-trē How to pronounce supplementary (audio) \

Medical Definition of supplementary

: added or serving as a supplement supplementary vitamins


sup·​ple·​men·​ta·​ry | \ ˌsə-plə-ˈmen-tə-rē, -trē How to pronounce supplementary (audio) \

Legal Definition of supplementary

: added or serving as a supplement

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