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diffusion
The central image is a gradual, natural outward flow from a concentrated center toward the edges. It describes a process of leveling out or blending until something is evenly distributed.
In social and technical contexts, it carries a neutral to positive connotation of progress and accessibility, describing how ideas or innovations "seep" into a population over time.
In scientific and artistic contexts, it implies a softening effect. Unlike 'explosion' or 'burst', which are sudden and violent, diffusion is slow, passive, and fluid.
Uncountable when discussing the general scientific process of particles moving or the abstract spreading of ideas. Countable when referring to specific instances, such as different types of 'diffusions' in a chemistry experiment or particular methods of light diffusion in photography.
💬Casual Conversation
The light here is so harsh. I'd kill for some soft diffusion like an autumn morning in Maine.
Irrelevant. Your request to modify the atmospheric filters is denied per Galactic Code 4-B.
Meanings
The spreading of something more widely.
The diffusion of new technology across the globe has accelerated due to the internet.
Examples
The diffusion of cultural values occurs through global media networks.
Osmosis is a specific type of diffusion across a semipermeable membrane.
The lamp shade provides a gentle diffusion of light in the room.
Collocations & Compounds
cultural diffusion
Noun collocation: the spread of cultural beliefs and social activities from one group to another
diffusion of innovation
Noun collocation: the process by which a new product or idea gains momentum and spreads through a population
facilitate diffusion
Verb collocation: to make the process of spreading or moving molecules easier
simple diffusion
Noun collocation: the passive movement of particles from high to low concentration without the use of energy