assumption

ot noun

1. The act of assuming, or taking to or upon oneself; the act of taking up or adopting. His assumption of secretarial duties was timely.
2. The act of taking for granted, or supposing a thing without proof; a supposition; an unwarrantable claim. Their assumption of his guilt disqualified them from jury duty.
3. The thing supposed; a postulate, or proposition assumed; a supposition.
4. The minor or second proposition in a categorical syllogism.