a statement that consists of a carefully considered opinion or judgment
Most people accept the proposition that we have a duty to protect endangered animals.
The theory is founded on two basic propositions.
an offer or suggestion, especially in business or politics:
He telephoned Stuart with a proposition.
The offer of two tickets for the price of one makes it a very attractive proposition.
It doesn't sound like a very viable proposition to me.
I've got a proposition to put to you.
a suggested change or addition to the law of a state of the US, which citizens vote on:
something that must be proved, or a question to which the answer must be found - used in geometry