expression
nonself; not self
Used in philosophical, psychological, or biological contexts to refer to that which is not the self, such as external objects, foreign entities, or the immune system's distinction between self and non-self.
免疫系は自己と非自己を区別する。
The immune system distinguishes between self and nonself.
非自己の概念は哲学でも重要だ。
The concept of nonself is also important in philosophy.