The definition of an assumption is an idea that is formed without evidence.(noun)
An example of an assumption is that there will be food at a party.
Assumption is defined as the act of taking on new responsibilities.(noun)
An example of assumption is the fulfillment of the duties of another person who has been fired from your company.
See assumption in Webster's New World College Dictionary
See assumption in American Heritage Dictionary 4
Origin: Middle English assumpcion
Origin: , from Latin assūmptiō, assūmptiōn-, adoption
Origin: , from assūmptus
Origin: , past participle of assūmere, to adopt; see assume.
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