assumption
noun
as·sump·tion
ə-ˈsəm(p)-shən 
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
3
a
: 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
4
a
: 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
6
Synonyms
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
Recent Examples on the Web
Interest expense for the quarter was $0, down from $8.1 million in the previous year, due to the assumption of outstanding debt by the Acquirer in connection with the Merger.
—
Quartz Bot, Quartz, 14 Nov. 2024
Many assumptions about the negative impacts of low fertility on the economy are likewise either overstated or unsupported by evidence.
—Vegard Skirbekk, Foreign Affairs, 6 Nov. 2024
Republicans have unsuccessfully filed lawsuits this cycle, challenging both the Saturday deadline and the assumption of validity for non-postmarked ballots.
—Zach Schonfeld, The Hill, 5 Nov. 2024
This volatility distribution suggests the conventional financial narrative may need updating, as the data no longer supports the assumption that bitcoin is significantly more volatile than blue-chip tech stocks.
—Andrey Sergeenkov, Forbes, 2 Nov. 2024
See all Example Sentences for assumption 
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Quartz Bot, Quartz, 14 Nov. 2024
Many assumptions about the negative impacts of low fertility on the economy are likewise either overstated or unsupported by evidence.
—Vegard Skirbekk, Foreign Affairs, 6 Nov. 2024
Republicans have unsuccessfully filed lawsuits this cycle, challenging both the Saturday deadline and the assumption of validity for non-postmarked ballots.
—Zach Schonfeld, The Hill, 5 Nov. 2024
This volatility distribution suggests the conventional financial narrative may need updating, as the data no longer supports the assumption that bitcoin is significantly more volatile than blue-chip tech stocks.
—Andrey Sergeenkov, Forbes, 2 Nov. 2024
See all Example Sentences for assumption
Dictionary Entries Near assumption
Cite this Entry
“Assumption.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/assumption. Accessed 28 Nov. 2024.
Copy CitationKids Definition
assumption
noun
as·sump·tion
ə-ˈsəm(p)-shən
1
capitalized
: August 15 observed as a church festival to mark the taking up of the Virgin Mary into heaven
2
a
: the act of taking upon oneself or taking possession of something
3
a
: the belief that something is true
b
: a fact or statement taken for granted
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