[quote=@souleaterfan320]
<Snipped quote by Mammalia>

Nooopppe.

Not even close.

I'll give you credit for searching, though. 

Shinsu, in essence, is everything. The air we breathe, the water we drink, even the bed we sleep in.

It's a term from the sorta manga called Tower of God.
[/quote]

So another word for matter.