"expansive notion" is a correct and usable phrase in written English.
It means a broad or comprehensive idea or concept. Example: The speaker's talk on environmental sustainability introduced an expansive notion of sustainability that went beyond just reducing waste.
This expansive notion of visual rendering had revolutionary effects on sculpture as well.
Stevens has always supported abortion rights and an expansive notion of freedom of speech.
Since the November elections, though, Mr. Obama has seemed inclined to pivot toward a more expansive notion of the presidency.
As the Hobby Lobby case illustrates, the courts, too, have embraced an expansive notion of the accommodation of religious belief.
A central goal of the inaugural Queer New York International Arts Festival was to posit a more expansive notion of queerness.
Viewing "Midsummer" and "Plough" on consecutive nights, one gets a sense of Mr. Dowling's expansive notion of theater as well as his directorial style.
But globalism means there are two sides to such expansive notions.
This may explain why Emory students, raised since elementary school with expansive notions of bullying and subjective notions of victimhood, could perceive the words "Trump 2016" as an act of bullying, intimidation, perhaps even violence, regardless of the intentions of the writer.
This is relevant today to the deteriorating public finances of New York, California and other states with expansive notions of what a government should do.
The Lockean libertarian can also be viewed as proposing a minimalist conception of equal opportunity that should supersede the more expansive notions of equal opportunity.
According to May, "Perhaps, then, the challenge lies in developing flexible interpretative strategies able to attend to Cooper's different vocal registers or resonances without silencing them, and more expansive notions of political action or of counter-publics able to recognize a broader range of activities as, in fact, activist" (50).
