What is the definition of migrant diffusion?

There isn't a term specifically called "migrant diffusion." However, the concept you're likely referring to relates to how migration patterns and movement of people influence the spread of ideas, culture, and other phenomena across different geographic regions.

Here's how we can break down the concept:

Diffusion in Geography:

Diffusion in geography refers to the spread of anything from one place to another. This could be:

* Cultural traits: Like languages, religions, food, or fashion

* Innovations: New technologies, inventions, or ideas

* Diseases: The spread of infectious diseases

Migration as a Driver of Diffusion:

Migration plays a significant role in diffusion processes. When people move from one place to another, they bring their culture, practices, and ideas with them. These are then spread to their new location and can influence the existing population.

Examples:

* Language diffusion: The spread of English throughout the world is partly due to migration and colonialism.

* Religious diffusion: The spread of Christianity and Islam has been significantly influenced by migration and conversion.

* Culinary diffusion: The popularity of certain cuisines in different parts of the world is often due to migration and the introduction of new dishes.

Key Concepts related to this idea:

* Relocation diffusion: The spread of an idea or innovation through the physical movement of people.

* Cultural convergence: The merging of cultures and ideas as a result of increased contact and interaction.

* Cultural divergence: The process of cultures becoming increasingly distinct and separate from each other.

In summary:

While there isn't a single term like "migrant diffusion," the concept reflects how migration serves as a key driver of diffusion processes, spreading cultural elements, ideas, and innovations across geographical boundaries.