add

[ad]
verb (used with object)
1.
to unite or join so as to increase the number, quantity, size, or importance: to add two cups of sugar; to add a postscript to her letter; to add insult to injury.
2.
to find the sum of (often followed by up ): Add this column of figures. Add up the grocery bills.
3.
to say or write further.
4.
to include (usually followed by in ): Don't forget to add in the tip.
verb (used without object)
5.
to perform the arithmetic operation of addition: children learning to add and subtract.
6.
to be or serve as an addition (usually followed by to ): His illness added to the family's troubles.
noun
7.
Journalism. copy added to a completed story.
Verb phrases
8.
add up to, to signify; indicate: The evidence adds up to a case of murder.
Idioms
9.
add up,
a.
to make the desired, expected, or correct total: These figures don't add up right.
b.
to seem reasonable or consistent; be in harmony or accord: Some aspects of the story didn't add up.

Origin:
1325–75; Middle English adden < Latin addere, equivalent to ad- ad- + -dere to put (combining form; see do1)

addable, addible, adjective
addedly, adverb
misadd, verb
readd, verb (used with object)
unaddable, adjective
unadded, adjective
unaddible, adjective

1. ad, add, odd ; 2. addable, edible ; 3. adds, ads, adz.


1. affix, append, attach, adjoin. 2. total, sum.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
add (æd)
 
vb (foll by to) (often foll by to) (foll by to) (foll by in)
1.  to combine (two or more numbers or quantities) by addition
2.  to increase (a number or quantity) by another number or quantity using addition
3.  to join (something) to something else in order to increase the size, quantity, effect, or scope; unite (with): to add insult to injury
4.  to have an extra and increased effect (on): her illness added to his worries
5.  (tr) to say or write further
6.  to include
 
n
7.  informal an instance of adding someone to one's list of contacts on a social networking site, esp MySpace: Thanks for the add!
 
[C14: from Latin addere, literally: to put to, from ad- to + -dere to put]

ADD
 
abbreviation for
attention deficit disorder

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

add
late 14c., from L. addere "add to, join" from ad- "to" + -dere comb. form meaning "to put, place," from dare "to give" (see date (1)). To add up "make sense" is from 1942. Add-on "additional component" is from 1941.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

ADD abbr.
attention deficit disorder

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
ADD  
Abbreviation of attention deficit disorder
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Abbreviations & Acronyms
ADD
  1. Administration on Developmental Disabilities

  2. attention deficit disorder

ADDS
American Digestive Disease Society
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences for adds
The process adds a considerable amount of water to the papers.
Finally, anonymity adds to the difficulty in finding reviewers in another way.
This trimer then adds additional molecules and forms a nucleation site.
Moreover, the cloth itself is heavy which adds to the inefficiency.
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