adds up to


verb (used with object)
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.
to find the sum of (often followed by up ): Add this column of figures. Add up the grocery bills.
to say or write further.
to include (usually followed by in ): Don't forget to add in the tip.
verb (used without object)
to perform the arithmetic operation of addition: children learning to add and subtract.
to be or serve as an addition (usually followed by to ): His illness added to the family's troubles.
Journalism. copy added to a completed story.
Verb phrases
add up to, to signify; indicate: The evidence adds up to a case of murder.
add up,
to make the desired, expected, or correct total: These figures don't add up right.
to seem reasonable or consistent; be in harmony or accord: Some aspects of the story didn't add up.

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. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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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
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]

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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Word Origin & History

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
Abbreviation of attention deficit disorder
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
  1. Administration on Developmental Disabilities

  2. attention deficit disorder

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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