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[suhp-luh-men-tuh-ree] /ˌsʌp ləˈmɛn tə ri/
Also, supplemental. of the nature of or forming a supplement; additional.
noun, plural supplementaries.
a person or thing that is supplementary.
1660-70; supplement + -ary
Related forms
nonsupplementary, adjective
presupplementary, adjective
unsupplementary, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for supplementary
  • To pay for college, many poorer students seek supplementary help from relatives other than parents and from private loans.
  • But all sorts of supplementary bills need upper-house approval.
  • It takes some digging in the supplementary data to figure out what's going on here.
  • So are scholarly footnotes, with their numbered links between the main body of the text and supplementary scholarship.
  • The first observation took place in the absence of supplementary food.
  • They would have to meet the obligations for supervision and regulation set out in its charter and supplementary agreements.
  • Many journals allow supplementary materials, which they post online.
  • During this exercise, neurons fired in her supplementary motor area.
  • Persons are supplementary to the primary teaching of the soul.
  • But he connects his own particular code with the earlier one in such a way as to make the one supplementary to the other.
British Dictionary definitions for supplementary


/ˌsʌplɪˈmɛntərɪ; -trɪ/
forming or acting as a supplement Also (less commonly) supplemental (ˌsʌplɪˈmɛntəl)
noun (pl) -ries
a person or thing that is a supplement
Derived Forms
supplementarily, (rare) supplementally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for supplementary

1660s, from supplement + -ary.

Online Etymology Dictionary, © 2010 Douglas Harper
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