lassumpció
Lassumpció is not a standard term in Catalan orthography; the common form is assumpció, with l'assumpció used when the definite article is required by grammar. The word comes from Latin assumpptio and carries several related senses in different contexts: the act of taking on or accepting something, a premise in reasoning, and the religious feast of the Assumption.
In logic and philosophy, assumpció refers to a proposition accepted for the sake of argument, a premise
Usage note: in everyday Catalan, the term is written assumpció rather than lassumpció, and capitalization follows