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Pathogen
– an agent that causes disease, especially a living
microorganism such as a bacterium or fungus
Pesticide
– a chemical used to kill pests especially insects
Petrochemical
– a chemical derived from petroleum or natural gas
Photosensitivity
– an abnormally heightened response, especially of the skin, to
sunlight or UV radiation, caused by certain disorders or
chemicals and characterized by a toxic or allergic reaction
Preservative
– a
substance added to food products or to organic solutions to
prevent decomposition due to chemical change or bacterial action
Solvent
– (1) a substance in which another substance is dissolved,
forming a solution, or (2) a substance, usually a liquid,
capable of dissolving another substance
Stabilizer
– a substance that renders or maintains a solution, mixture,
suspension or state resistant to chemical change
Sudsing agent
– a substance that produces a foam or lather
Surfactant
– substances
that, when added to a liquid, reduces its surface tension,
thereby increasing its spreading and wetting properties.
Synthetic
– prepared or made artificially
Systemic tissues
– those parts of the body that receive blood through the aorta
rather than through the pulmonary artery
Toxin
– a poisonous substance, especially a protein, that is produced
by living cells or organisms and is capable of causing disease
when introduced into the body tissues but is often also capable
of inducing neutralizing antibodies or antitoxins
Transdermal
– supplying a medication in a form for absorption through the
skin into the bloodstream
Viscosity adjuster
– a substance that alters the consistency of a product i.e.
makes it thicker or thinner
Wetting agent
– a
substance that reduces the surface tension of a liquid, causing
the liquid to spread across or penetrate more easily the surface
of a solid
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