noun

• The act of assuming, or taking to or upon oneself; the act of taking up or adopting.
• The act of taking for granted, or supposing a thing without proof; a supposition; an unwarrantable claim.
• The thing supposed; a postulate, or proposition assumed; a supposition.
• (logic) The minor or second proposition in a categorical syllogism.
• The taking of a person up into heaven.
• A festival in honor of the ascent of the Virgin Mary into heaven, celebrated on 15 August.
• (rhetoric) Assumptio.
• The Assumption of Mary, the mother of Jesus, into heaven, a Catholic dogma.
• A Christian holy day of obligation (August 15) celebrating the Assumption of Mary.