something that you have in your mind for example idea.
Where on earth would you get such a notion?
I have a notion that a lot of people come on here asking for example sentences because they don't want to do their own homework. Notion is an older word for idea.
The word notion is a singular noun. The plural would be notions.
The prefix "con-" means with or together.
This notion originated with theories of structuralism and poststructuralism. Structuralism, notably developed by Ferdinand de Saussure, argued that language shapes our perception of reality. Poststructuralist thinkers like Jacques Derrida further emphasized the indeterminacy and instability of meaning in language, suggesting that objective truth is elusive.