assumption

noun
as·​sump·​tion | \ ə-ˈsəm(p)-shən How to pronounce assumption (audio) \

Definition of assumption

1 : a taking to or upon oneself the assumption of a new position
2 : the act of laying claim to or taking possession of something the assumption of power
3a : an assuming that something is true a mistaken assumption
b : a fact or statement (such as a proposition, axiom (see axiom sense 2), postulate, or notion) taken for granted
4a : the taking up of a person into heaven
b capitalized : August 15 observed in commemoration of the Assumption of the Virgin Mary
5 : the taking over of another's debts

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Examples of assumption in a Sentence

I made the assumption that he was coming, so I was surprised when he didn't show up. He will come home tomorrow. At least, that's my assumption. Many scientific assumptions about Mars were wrong. I'm telling you our arrival time on the assumption that you will check to see whether or not our flight is on time before you come to the airport. Her plan is based on the underlying assumption that the economy will improve in the near future. her assumption of the presidency the buyer's assumption of debt
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Recent Examples on the Web

Full moons are revelatory, so save your assumptions for another day. Randon Rosenbohm, Allure, "What May’s Taurus Horoscope Means for You," 30 Apr. 2019 Until the bombshell in season seven’s finale, when it was revealed that Jon Snow is actually a Targaryen and therefore the rightful heir to the throne, audiences have operated under the assumption that Daenerys was the real heir. Jill Gutowitz, Glamour, "Daenerys Targaryen Will Sit on the Iron Throne on Game of Thrones, and You Know It," 12 Apr. 2019 But with her new Netflix movie Cam, a collaboration with her director friend Daniel Goldhaber, Mazzei's hoping to challenge that assumption. Carl Kelsch, Marie Claire, "'Cam' Is the Sex-Positive Horror Movie You Have to See," 24 Dec. 2018 Research published Wednesday has now shattered that assumption. Dan Goodin, Ars Technica, "Potentially disastrous Rowhammer bitflips can bypass ECC protections," 22 Nov. 2018 But that assumption is simply incorrect, as everyone faces challenges in life. Jessica A. Gold, SELF, "A Psychiatrist Explains Why You May Feel Annoyed When You Hear Celebrities Talk About Anxiety," 3 Aug. 2018 If sedans winnow almost completely before autonomy hits — which seems totally possible given the breakneck pace that car companies around the world are adopting more SUVs and / or trucks — then won’t that assumption be wrong? Sean O'kane, The Verge, "This new electric concept is a futuristic take on old-school racecars," 29 Apr. 2018 But miscalculations and assumptions could prove deadly. David Hambling, Popular Mechanics, "What You Need to Know About the South China Sea, the World's Next Hot Spot," 27 Feb. 2019 That’s how the system has worked ever since Alexander Hamilton got James Madison to back federal assumption of state debts in exchange for locating the nation’s capital on the banks of the Potomac River. Matthew Yglesias, Vox, "The shutdown is intractable because Trump’s wall is ridiculous and Republicans know it," 8 Jan. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'assumption.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of assumption

13th century, in the meaning defined at sense 4a

History and Etymology for assumption

Middle English, from Late Latin assumption-, assumptio taking up, from Latin assumere — see assume

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Statistics for assumption

Last Updated

6 May 2019

Look-up Popularity

Time Traveler for assumption

The first known use of assumption was in the 13th century

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More Definitions for assumption

assumption

noun

English Language Learners Definition of assumption

: something that is believed to be true or probably true but that is not known to be true : something that is assumed
: the act of beginning a role, duty, etc.
: the act of taking or beginning to have power, control, etc., in a job or situation

assumption

noun
as·​sump·​tion | \ ə-ˈsəmp-shən How to pronounce assumption (audio) \

Kids Definition of assumption

1 : the act of taking on the assumption of power
2 : something accepted as true I'm making plans on the assumption that you will be here.

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Comments on assumption

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