Assumption Definition
 ə-sŭmpshən 
  assumptions
  
    noun
  
 
    assumptions
  
The act of taking to or upon oneself.
 Assumption of an obligation.
 American Heritage 
The taking up of a person into heaven.
 Webster's New World 
The act of taking possession or asserting a claim.
 Assumption of command.
 American Heritage 
The taking up of the body and soul of the Virgin Mary into heaven after her death.
 Webster's New World 
The act of taking for granted.
 Assumption of a false theory.
 American Heritage 
Synonyms: 
  - August 15
 - Assumption of Mary
 - subsumption
 - entailment
 - laying claim
 - premise
 - premiss
 - supposal
 - supposition
 - effrontery
 - presumptuousness
 - presumption
 - presupposal
 - hypothesization
 - surmise
 
Other Word Forms of Assumption
Noun
Singular:
 assumptionPlural:
 assumptionsOrigin of Assumption
-  
From Middle English assumpcioun, from Medieval Latin assumptio (“a taking up (into heaven)”) and Latin assumption (“a taking up, adoption, the minor proposition of a syllogism”); see assume.
From Wiktionary
 -  
Middle English assumpcion from Latin assūmptiō assūmptiōn- adoption from assūmptus past participle of assūmere to adopt assume
From American Heritage Dictionary of the English Language, 5th Edition
 
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