diffusion

play
noun dif·fu·sion \di-ˈfyü-zhən\

Definition of diffusion

  1. 1 :  the state of being spread out or transmitted especially by contact :  the action of diffusing the diffusion of knowledge

  2. 2 :  prolixity, diffuseness

  3. 3a chemistry :  the process whereby particles of liquids, gases, or solids intermingle as the result of their spontaneous movement caused by thermal (see 1thermal 1b) agitation and in dissolved substances move from a region of higher to one of lower concentrationb physics (1) :  reflection of light by a rough reflecting surface (2) :  transmission of light through a translucent material :  scattering

  4. 4 :  the spread of cultural elements from one area or group of people to others by contact

  5. 5 photography :  the softening of sharp outlines in an image

diffusional

play \-ˈfyü-zhə-nəl\ adjective

Examples of diffusion in a Sentence

  1. the author's tendency toward diffusion makes the novel a tedious read

Recent Examples of diffusion from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diffusion'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of diffusion

see 2diffuse


DIFFUSION Defined for Kids

diffusion

play
noun dif·fu·sion \di-ˈfyü-zhən\

Definition of diffusion for Students

  1. 1 :  the act of spreading or allowing to spread freely

  2. 2 :  the mixing of particles of liquids or gases so that they move from a region of high concentration to one of lower concentration


Medical Dictionary

diffusion

play
noun dif·fu·sion \dif-ˈyü-zhən\

Medical Definition of diffusion

  1. 1:  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

  2. 2a:  reflection of light by a rough reflecting surfaceb:  transmission of light through a translucent material

diffusional

\-ˈyüzh-nəl, -ən-əl\play adjective


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