Noun diffusor has 2 senses

• diffusor(n = noun.artifact) diffuser - baffle that distributes sound waves evenly; Array
is a kind of baffle, baffle board
Derived form verb diffuse₂

• diffusor(n = noun.artifact) diffuser - optical device that distributes the light of a lamp evenly; Array
is a part of lamp, lighting fixture
is a kind of optical device
Derived form verb diffuse₂