Acute

{
  "id": "MLC-T-ENV-000430",
  "term": "Acute",
  "field": "Environment",
  "definition": "1. Used to describe disease where symptoms are readily evident. Treatment is generally required.\n\n2. Having a sudden onset or lasting a short time. An acute stimulus is severe enough to induce a response rapidly. The word acute can be used to define either the exposure or the response to an exposure (effect). The duration of an acute aquatic toxicity test is generally 4 days or less and mortality is the response usually measured.\n\n3. A stimulus severe enough to rapidly induce an effect; in aquatic toxicity tests, an effect observed in 96 hours or less is typically considered acute. When referring to aquatic toxicology or human health, an acute effect is not always measured in terms of lethality.\n\n4. Occurring over a short period of time; used to describe brief exposures and effects which appear promptly after exposure.\n\n5. Occurring only once or more than once within a short period of time.\n\n6. Occurring over a short time (compare with chronic).",
  "subject": "Policy and guidance",
  "references": [
    "Ag 101 Glossary of American Agriculture",
    "Waste and Cleanup Risk Assessment Glossary",
    "National Pollutant Discharge Elimination System (NPDES) Glossary",
    "Drinking Water Technical & Legal Terms",
    "Superfund for Students and Teachers Glossary",
    "ATSDR 2004"
  ],
  "url": "https://mlchart.com/terminology/environment/acute/"
}