Thyroid: (noun) A gland in your neck that secretes hormones that are in charge of regulating your metabolism and growth.
Plasticizer: (noun) A material that softens and makes a brittle material more pliable.
Subscript: (noun) The number placed to the bottom-right of an element's symbol in a molecule.
Carcinogen: (noun) An agent that causes cancer.
PVC (Polyvinyl chloride): (noun) "a tough, chemically resistant synthetic resin made by polymerizing vinyl chloride and used for a wide variety of products including pipes, flooring, and sheeting." The New Oxford American Dictionary.
Compound: (noun) Two or more elements chemically blended together.
Asthma: (noun) A respiratory disorder that inhibits breathing.
Toxic: (adjective) Poisonous.
Combustible: (adjective) Able to catch fire and burn easily; flammable.
EPA: The Environmental Protection Agency
