ifs

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if

[if]
conjunction
1.
in case that; granting or supposing that; on condition that: Sing if you want to. Stay indoors if it rains. I'll go if you do.
2.
even though: an enthusiastic if small audience.
3.
whether: He asked if I knew Spanish.
4.
(used to introduce an exclamatory phrase): If only Dad could see me now!
5.
when or whenever: If it was raining, we had to play inside.
noun
6.
a supposition; uncertain possibility: The future is full of ifs.
7.
a condition, requirement, or stipulation: There are too many ifs in his agreement.
Idioms
8.
ifs, ands, or buts, reservations, restrictions, or excuses: I want that job finished today, and no ifs, ands, or buts.

Origin:
before 900; Middle English, variant of yif, Old English gif, gef; akin to Old Norse ef if, Gothic ibai whether, Old High German iba condition, stipulation


1, 2. If, provided, providing imply a condition on which something depends. If is general. It may be used to indicate suppositions or hypothetical conditions (often involving doubt or uncertainty): If you like, we can go straight home. If I had known, I wouldn't have gone. If may mean even though: If I am wrong, you are not right. It may mean whenever: If I do not understand, I ask questions. Provided always indicates some stipulation: I will subscribe ten dollars provided (on the condition ) that you do, too. Provided he goes, we can go along. Providing means the same as provided that is, just in case some certain thing should happen: We will buy the house, providing (provided ) we can get a mortgage.


If meaning “whether,” as in I haven't decided if I'll go, is sometimes criticized, but the usage has been established in standard English for a long time.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
if (ɪf)
 
conj
1.  in case that, or on condition that: if you try hard it might work; if he were poor, would you marry him?
2.  used to introduce an indirect question. In this sense, if approaches the meaning of whether
3.  even though: an attractive if awkward girl
4.  a.  used to introduce expressions of desire, with only: if I had only known
 b.  used to introduce exclamations of surprise, dismay, etc: if this doesn't top everything!
5.  as if as it would be if; as though: he treats me as if I were junior to him
 
n
6.  an uncertainty or doubt: the big if is whether our plan will work at all
7.  a condition or stipulation: I won't have any ifs or buts
 
[Old English gif; related to Old Saxon ef if, Old High German iba whether, if]

IF or electronics i.f.
 
abbreviation for
intermediate frequency
 
i.f. or electronics i.f.
 
abbreviation for

IFS
 
abbreviation for
Irish Free State (now called Republic of Ireland)

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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Dictionary.com's 21st Century Lexicon
Main Entry:  IFS
Part of Speech:  n
Definition:  See information fatigue syndrome
Dictionary.com's 21st Century Lexicon
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Etymonline
Word Origin & History

if
O.E. gif (initial g- in O.E. pronounced with a sound close to Mod.Eng. -y-), from P.Gmc. *ja-ba (cf. O.N. ef, O.Fris. gef, O.H.G. ibu, Ger. ob, Du. of), probably originally from an oblique case of a noun meaning "doubt" (cf. O.H.G. iba, O.N. if "doubt"). Iffy is first attested 1937 in Amer.Eng.; originally
associated with President Franklin D. Roosevelt.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

IF abbr.
initiation factor

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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FOLDOC
Computing Dictionary

IFS definition


1. internal field separators.
2. Installable File System.
3. Iterated Function System.
(1999-04-07)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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American Heritage
Abbreviations & Acronyms
IF
  1. infertility

  2. intracytoplasmic sperm injection

  3. interferon

  4. intermediate frequency

IFS
  1. Information Fatigue Syndrome

  2. International Foundation for Science

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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