a festival in the Romish church, in honour of the miraculous ascent of the Virgin Mary into heaven: the Greek church, who also observe this festival, celebrate it on the fifteenth of August with great ceremony.

Assumption, in logic, is the minor or second proposition in a categorical syllogism.

Assumption is also used for a consequence drawn from the propositions whereof an argument is composed.

Assumption, in geography, a city of S. America, situated near the mouth of the river Plata, and on the opposite shore to Buenos Ayres, in 60° W. long. and 34° S. lat.