Noun, No-adjective
1. proposition; thesis; notion; theory
2. problem; issue; challenge
Wikipedia definition
3. PropositionIn logic and philosophy, the term proposition refers to either (a) the "content" or "meaning" of a meaningful declarative sentence or (b) the pattern of symbols, marks, or sounds that make up a meaningful declarative sentence. The meaning of a proposition includes having the quality or property of being either true or false, and as such propositions are claimed to be truthbearers.
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