- [transitive, intransitive] diffuse (something) (formal) to spread something or become spread widely in all directions傳播；普及；使分散；散布
- The problem is how to diffuse power without creating anarchy.問題在於如何將權力分散而不造成無政府狀態。
- Technologies diffuse rapidly.技術普及非常快。
- [intransitive, transitive] diffuse (something) (specialist) if a gas or liquid diffuses or is diffused in a substance, it becomes slowly mixed with that substance（使氣體或液體）擴散，彌漫，滲透
- [transitive] diffuse something (formal) to make light shine less brightly by spreading it in many directions（使光）模糊，漫射，漫散
- The moon was fuller than the night before, but the light was diffused by cloud.月亮比頭一天晚上更圓，但因雲層遮掩而月光朦胧。
Word Originlate Middle English: from Latin diffus- ‘poured out’, from the verb diffundere, from dis- ‘away’ + fundere ‘pour’; the adjective via French diffus or Latin diffusus ‘extensive’, from diffundere.