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assumption

[uh-suhmp-shuh n] /əˈsʌmp ʃən/
noun
1.
something taken for granted; a supposition:
a correct assumption.
2.
the act of taking for granted or supposing.
3.
the act of taking to or upon oneself.
4.
the act of taking possession of something:
the assumption of power.
5.
arrogance; presumption.
6.
the taking over of another's debts or obligations.
7.
Ecclesiastical.
  1. (often initial capital letter) the bodily taking up into heaven of the Virgin Mary.
  2. (initial capital letter) a feast commemorating this, celebrated on August 15.
8.
Logic. the minor premise of a syllogism.
Origin
1250-1300
1250-1300; Middle English assumpcioun, assompcioun, assumsion < Latin assūmptiōn- (stem of assūmptiō), equivalent to assūmpt(us) taken up (past participle of assūmere; see assume) + -iōn- -ion
Related forms
misassumption, noun
nonassumption, noun
overassumption, noun
preassumption, noun
reassumption, noun
self-assumption, noun
superassumption, noun
Can be confused
assumption, axiom, premise, presumption.
Word story
The word assumption is a great example of how a word can take on new dimensions of meaning over time, while staying true to some aspect of its original sense.
assumption has been in the language since the 13th century, and was initially confined to a specific ecclesiastical meaning in the Catholic Church. The Latin word on which it is based literally means “the action of being taken up or received,” and in English assumption referred to the taking up into heaven of the Virgin Mary. That meaning still exists today, and in all the meanings it has assumed since then, one can see the common thread running through them is the sense of taking.
One early sense meant “arrogance,” as in this 1814 quote from Sir Walter Scott: “his usual air of haughty assumption.” Arrogance is a taking upon oneself a conviction of self-importance. Later senses arose having to do with the taking on of power or other responsibilities, as in “the assumption of command.”
Probably the most common meaning of assumption in use today is for indicating a supposition, an estimate, a conjecture—that is, something taken for granted. And as any schoolkid knows, presuming to assume can be dangerous, leading us to make, as the saying goes, “an ASS of U and ME!”
Related Quotations
“[T]he assumption that young people are apathetic, the assumption that Republicans won't cross over, the assumption that the wealthy care nothing for the poor and that the poor don't vote, the assumption that African-Americans can't support the white candidate, whites can't support the African-American candidate, blacks and Latinos cannot come together. We are here tonight to say that that is not the America we believe in.“
—Barack Obama, “South Carolina Democratic Primary Victory Speech“ American Rhetoric (delivered January 26, 2008)
“We had an assumption, and we had that assumption because Saddam Hussein had lied about using WMD and he had lied about getting rid of them.“
—Jonathan Powell, “Iraq inquiry: Tony Blair got it wrong, says top aide“ The Telegraph (January 19, 2010)
“Wethern's Law of Suspended Judgement: assumption is the mother of all screwups.“
—Mark Mills, The Information Officer (2010)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for self assumption

assumption

/əˈsʌmpʃən/
noun
1.
the act of taking something for granted or something that is taken for granted
2.
an assuming of power or possession of something
3.
arrogance; presumption
4.
(logic) a statement that is used as the premise of a particular argument but may not be otherwise accepted Compare axiom (sense 4)
Derived Forms
assumptive, adjective
assumptively, adverb
Word Origin
C13: from Latin assūmptiō a taking up, from assūmere to assume

Assumption

/əˈsʌmpʃən/
noun (Christianity)
1.
the taking up of the Virgin Mary (body and soul) into heaven when her earthly life was ended
2.
the feast commemorating this, celebrated by Roman Catholics on Aug 15
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 self assumption

assumption

n.

c.1300, "the reception, uncorrupted, of the Virgin Mary into Heaven," also the Church festival (Aug. 15) commemorating this, Feast of the Assumption, from Old French assumpcion and directly from Latin assumptionem (nominative assumptio) "a taking, receiving," noun of action from past participle stem of assumere (see assume). Meaning "minor premise of a syllogism" is late 14c. Meaning "appropriation of a right or possession" is mid-15c. Meaning "action of taking for oneself" is recorded from 1580s; that of "something taken for granted" is from 1620s.

Online Etymology Dictionary, © 2010 Douglas Harper
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