Diffusion

{
  "id": "MLC-T-ENV-007949",
  "term": "Diffusion",
  "field": "Environment",
  "definition": "1. The movement of suspended or dissolved particles from a more concentrated to a less concentrated region as a result of the random movement of individual particles; the process tends to distribute them uniformly throughout the available volume.\n\n2. The movement of suspended or dissolved particles (or molecules) from a more concentrated to a less concentrated area. The process tends to distribute the particles or molecules more uniformly.\n\n3. Diffusion is the general process whereby particles of liquids, gases or solids intermingle as the result of their spontaneous movement from regions of higher concentrations to regions of lower concentrations. It is sometimes called self-diffusion, molecular diffusion or ionic diffusion and is only important at low velocity. Diffusion ceases only when the concentration of the constituent of interest is the same everywhere.\n\n4. The process by which molecules in a single phase equilibrate to a zero concentration gradient by random molecular motion (Brownian motion). The flux of molecules is from regions of high concentration to low concentration and is governed by Fick's Second Law.\n\n5. Spontaneous movement of heat, moisture, or gas throughout a body or space. Movement is from high to low points of temperature or concentration.\n\n6. Process by which the molecules of two or more substances gradually mix as a result of random thermal motion,",
  "subject": "Water",
  "references": [
    "Drinking Water Technical & Legal Terms",
    "Terms of Environment",
    "Underground Injection Control Terms",
    "Glossary of Technical Terms: Office of Underground Storage Tanks; Office of Underground Storage Tanks Technical Terms",
    "USDA Forest Service Dry Kiln Operator's Manual at https://www.fpl.fs.fed.us/documnts/usda/ah188/intro_gloss_index.pdf",
    "Basic Concepts in Environmental Sciences"
  ],
  "url": "https://mlchart.com/terminology/environment/diffusion/"
}