Page 50 - Encyclopedia of Chemical Compounds 3 Vols

WordstoKnow
•

T

TERATOGENIC Causing birth defects; comes from the Greek
word ‘‘teratogenesis,’’ meaning ‘‘monster-making.’’

THERMAL Involving the use of heat.

TOXIC Poisonous or acting like a poison.

TOXIN A poison, usually produced by microorganisms or by
plants or animals.

TRAP A reservoir or area within Earth’s crust made of non-
porous rock that can contain liquids or gases, such as
water, petroleum, and natural gas.
•
U

ULTRAVIOLET LIGHT Light that is shorter in wavelength than
visible light and can fade paint finishes, fabrics, and
other exposed surfaces.
•
V

VASODILATOR A chemical that makes blood vessels widen,
reducing blood pressure.
VISCOUS Having a syrupy quality causing a material to flow
slowly.

VITRIFICATION The process by which something is changed
into glass or a glassy substance, usually by heat.

VOLATILE Able to turn to vapor easily at a relatively low
temperature.
•
W

WATER OF HYDRATION Water that has combined with a
compound by some physical means.

CHEMICAL COMPOUNDS xlix