Something that causes decomposition or rot: Certain bacteria act as septics on human wastes.

1. Descriptive of a condition or disease caused by the absorption of the products of putrescence or a substance that promotes putrescence: Gangrene is considered to be a very dangerous septic disease.
2. Produced by decay or morbid germs: The medical investigation determine that the condition of the patient's septic poisoning was possibly caused by the use of a non-sterilized surgical instrument during his operation.
3. Heavily polluted; a reference to a habitat or zone of fresh water rich in decomposing organic matter, high in carbon dioxide and very low in dissolved oxygen: The pond on the farm seemed to be very septic because of poor drainage.

Infarcted tissue that has been invaded by pathogenic organisms.

A serious, abnormal condition that occurs when an overwhelming bacterial contamination leads to low blood pressure and low blood flow: Vital organs, such as the brain, heart, kidneys, and liver may not function properly or may fail during a septic shock.

Toxins or poisons that are released by a bacteria, or fungus, may cause direct tissue damage to the body and can lead to low blood pressure and poor organ functions which cause a strong inflammatory response from the body that contributes to a septic shock.

A large storage container where solid matter or sewage is disintegrated by bacteria: Dick bought a septic tank for his farm because he was too far away to take advantage of a community sewage system.

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