Assumption (noun)

1. Something that is taken for granted or accepted as true without proof.
2. A belief or principle that is considered to be true, even though there is no evidence to support it.
3. The act of taking control or possession of something.

Origin:

Derived from the latin word "assumere", the word "assumption" means to take for granted or to accept as true without proof.

Examples:

1. The assumption that the sun would rise in the east every day was proven false by the discovery of the precession of the equinoxes.
2. The assumption that all people are equal is the basis of democracy.
3. The assumption of the throne by the new king was met with great celebration.
4. The assumption of the company by the new CEO was met with mixed emotions.
5. The assumption of the debt by the new owners was a major concern for the creditors.