D defs.my
Entry 5 senses Webster, 1913

Assumption

/əs-ŭm'-pshən/ · As·sump·tion · IPA /əˈsʌm(p).ʃ(ə)n/
01 n. The act of assuming, or taking to or upon one's self; the act of taking up or adopting.
  1. 1.
    The act of assuming, or taking to or upon one's self; the act of taking up or adopting.
    “The assumption of authority.” Whewell.
  2. 2.
    The act of taking for granted, or supposing a thing without proof; supposition; unwarrantable claim.
    “This gives no sanction to the unwarrantable assumption that the soul sleeps from the period of death to the resurrection of the body.” — Thodey.
    “That calm assumption of the virtues.” — W. Black.
  3. 3.
    The thing supposed; a postulate, or proposition assumed; a supposition.
    “Hold! says the Stoic; your assumption's wrong.” Dryden.
  4. 4.
    The minor or second proposition in a categorical syllogism.(Logic)
  5. 5.
    The taking of a person up into heaven.(Rom. Cath. & Greek Churches)