There are multiple definitions - click on the translation that matches your context.

proposta

substantivo

full

proposition

noun

Definitions of proposition

a suggested course of action that is put to the vote to be decided

His proposition was carried, with 29 in favour, 19 against, and one member abstaining.

an idea, opinion or statement that can be examined to see if it is valid

The proposition that his disorder diminished his responsibility for the killing was "open to huge doubts".

an offer or suggestion, usually concerning business, politics or law etc

The company may consider a similar proposition to the deal Universal signed with Virgin Media.