Toxicology

Toxicology

A branch of biology, chemistry, and medicine concerned with the study of the adverse effects of chemicals or physical agents on living organisms, as well as the symptoms, mechanisms, treatments and detection of poisoning, especially the poisoning of people.

Industry: Biology; Chemistry

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Toxicology

Aerodynamic diameter of a particle

Biology; Toxicology

Diameter of a spherical particle with relative density equal to unity which has the same settling velocity in air as the particle in question.

Complete mineralization

Biology; Toxicology

Complete breakdown of a complex organic compound to carbon dioxide, water, oxides and oxidative inorganic products such as nitrate or sulfate.

Long-term effect

Biology; Toxicology

Consequence which develops slowly and (or) has a long-lasting course: may be applied to an effect which develops rapidly and is long lasting.

Chronic effect

Biology; Toxicology

Consequence which develops slowly and (or) has a long-lasting course: may be applied to an effect which develops rapidly and is long lasting.

Long-term toxicity

Biology; Toxicology

1. Adverse effects following chronic exposure. 2. Effects which persist over a long period of time whether or not they occur immediately upon exposure or are delayed.

Aneuploid

Biology; Toxicology

Cell or organism with missing or extra chromosomes or parts of chromosomes and thus an abnormal number of chromosomes which is not an exact multiple of the haploid number.

Active transport

Biology; Toxicology

Movement of a substance across a cell membrane against an electrochemical gradient, in the direction opposite to normal diffusion and requiring the expenditure of energy.