dif·fus·er
noun/dɪˈfjuːzə(r)/
/dɪˈfjuːzər/
- a device used in photography to avoid dark shadows or areas that are too bright
（摄影用的）漫射体，柔光镜 - a part that is attached to a piece of equipment (for example a hairdryer) to make air flow more slowly and over a wider area
（吹风机的）散风嘴