Wiktionary
n. The philosophical view that all perception always takes place from a specific perspective.
Wikipedia
Perspectivism is the term coined by Friedrich Nietzsche in developing the philosophical view (touched upon as far back as Plato's rendition of Protagoras) that all ideations take place from particular perspectives. This means that there are many possible conceptual schemes, or perspectives in which judgment of truth or value can be made. This is often taken to imply that no way of seeing the world can be taken as definitively "true", but does not necessarily entail that all perspectives are equally valid.
Usage examples of "perspectivism".
He must do this, because if he admits that a world-centric, global perspectivism has adaptive advantage over narrower perspectives, then he must admit that his cultural stance of universal-global perspectivism is superior to those cultures that he studies that do not share his universal pluralism.