Diffusion

GRE TOEFL

[编辑] 解释

noun

Date: 14th century
1. the action of diffusing ; the state of being diffused
2. prolixity, diffuseness
3.
- a. the process whereby particles of liquids, gases, or solids intermingle as the result of their spontaneous movement caused by thermal agitation and in dissolved substances move from a region of higher to one of lower concentration
- b.
  - (1) reflection of light by a rough reflecting surface
  - (2) transmission of light through a translucent material ; scattering
4. the spread of cultural elements from one area or group of people to others by contact
5. the softening of sharp outlines in a photographic image
? diffusional adjective