assumption

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

noun

Religion the taking up of a person into heaven
R.C.Ch.
1. the taking up of the body and soul of the Virgin Mary into heaven after her death
2. a church festival on Aug. 15 celebrating this
the act of assuming; a taking upon oneself, taking over, or taking for granted
anything taken for granted; supposition
presumption

Related Forms:

See assumption in American Heritage Dictionary 4

noun

The act of taking to or upon oneself: assumption of an obligation.
The act of taking possession or asserting a claim: assumption of command.
The act of taking for granted: assumption of a false theory.
Something taken for granted or accepted as true without proof; a supposition: a valid assumption.
Presumption; arrogance.
Logic A minor premise.
Assumption
a. Christianity The taking up of the Virgin Mary into heaven in body and soul after her death.
b. A feast celebrating this event.
c. August 15, the day on which this feast is observed.