Noun
Umwelt (plural Umwelts or Umwelten)
One's surroundings or environment; the outer world as perceived by organisms within it.
umwelt (plural umwelts or umwelten)
Alternative letter-case form of Umwelt
Here, Lorenz used Jakob von Uexküll 's concept of Umwelt to understand how the limited perception of animals filtered out certain phenomena with which they interacted instinctively. Source: Internet
In contrast to this, human understanding adds to the animal "Umwelt" a relation of self-identity within objects which transforms objects experienced into things as well as +, –, 0 objects. Source: Internet