For Contamination we have terms and definitions in 13 topics. The topics are Environment, Environmental Toxins, Food Industry, Food Safety, Geography, Marketing, Microbiology, Non-Profit Accountability, Nuclear Science, Photography, Sanitation, Science and Teacher Evaluation.

Contamination (Environment)

Introduction into water, air, and soil of microorganisms, chemicals, toxic substances, wastes, or wastewater in a concentration that makes the medium unfit for its next intended use. Also applies to surfaces of objects, buildings, and various household and agricultural use products.

Contamination (Environmental Toxins)

The presence of foreign materials, chemicals or radioactive substances in the environment (soil, sediment, water or air) in significant concentrations.

Contamination (Food Industry)

Contamination is the addition of a substance (be it microbial, chemical, physical or biological in nature) to a food fit for human consumption which then makes that food unfit for human consumption. Eating contaminated food may cause food poisoning in the case of microbial, chemical or biological contamination or internal injury in the case of physical contamination.
See chemical contamination, food poisoning, microbial contamination and physical contamination.

Contamination (Food Safety)

The unintended presence of harmful substances or microorganisms in food.

Contamination (Geography)

Pollution by unwanted or damaging material, often bacterial, chemical or radioactive

Contamination (Marketing)

The inclusion of an individual or group of respondents in a test group who do not represent the population.

Contamination (Microbiology)

The presence of an infectious agent on a body surface, in clothes, bedding, toys, surgical instruments or dressings, or other inanimate articles or substances including water and food.

Contamination (Non-Profit Accountability)

A tendency for the assessor's data, the scorer's ratings and judgments, or the evaluator's conclusions to be influenced or confounded by irrelevant knowledge about the subject, other personnel, or other factors that have no bearing on the subject's level of performance.

Contamination (Nuclear Science)

Radioactive material deposited or dispersed in materials or places where it is not wanted.

Contamination (Photography)

Traces of chemicals that are present where they don't belong, causing loss of chemical activity, staining, or other problems.

Contamination (Sanitation)

The introduction into water of microorganisms, chemicals, wastes or wastewater in a concentration that makes the water unfit for its intended use.

Contamination (Science)

The process of making impure, usually with either unwanted substances or microorganisms

Contamination (Teacher Evaluation)

A tendency for the assessor's data, the scorer's ratings and judgments, or the evaluator's conclusions to be influenced or confounded by irrelevant knowledge about the teacher, other personnel, or other factors that have no bearing on the teacher's level of performance. See Bias, Error of Measurement, Rater Effect.

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