- diffuse - spread out; not concentrated in one place; "a large diffuse organization"
Antonym: concentrated (indirect, via distributed)
- diffuse - lacking conciseness; "a diffuse historical novel"
Antonym: concise (indirect, via prolix)
- diffuser, diffusor - baffle that distributes sound waves evenly
--1 is a kind of baffle, baffle board
- diffuser, diffusor - optical device that distributes the light of a lamp evenly
--2 is a kind of optical device
--2 is a part of lamp; lighting fixture