Definition: The Hebrew word for "diffusion" in the Old Testament is "dafa". It describes a process where something disperses or becomes more widely spread across land, time, or space. A similar concept is often associated with the act of spreading diseases, as it spreads from one location to another through movement, infection, or other means. For example, in the story of Noah's Ark, God created all living creatures by covering them and sprinkling dust over their bodies, causing each creature to disperse across the land, thus making the land fertile for agriculture. The word "dafa" is derived from the Hebrew verb "dash'at," which means "to spread." It signifies spreading out or spreading into many places. In more complex terms, it involves a process where something becomes widely distributed through a variety of means. To define "diffusion," we might say that it's the movement of matter, especially by an agent other than its creator, such as water, air, heat, light, sound, or plants and animals, across a space. When this happens, there is an increase in the distribution or concentration of objects from one place to another, often in a manner similar to the spreading of disease. In essence, "diffusion" can be seen as the process by which certain substances are spread out into different areas without being introduced directly into them through their creator. This concept ties closely to the idea of spreading diseases or infection, illustrating how things get dispersed from one part of the body to another.

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