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Terminal disease Disease that cannot be satisfactorily treated and is likely to result
in the death
Thermal energy Internal energy in a system in a state of thermodynamic equilibrium due to its temperature
Thermal pollution The discharge of liquid with higher temperature into natural
waters that would cause harm to environment
Thermal treatment Use of elevated temperatures to treat waste
Thermocline Area in the world’s ocean, where temperature reduces rapidly with
depth
Thermohaline circulation (THC) Large-scale, density-driven water movement in
the ocean, due to differences in temperature and salinity
Thermometer Instrument for measuring temperature
Thermosphere The region of the atmosphere where temperature rises continuously with altitude
Tidewrack Beach litter
Toxicity Extent to which a matter can damage an organism
Toxicology Specialty of science that deals with study of undesirable effects that
occur in living being owing to chemicals
Transcytosis Transcellular transport of macromolecule across cell
Transistor Device used to regulate electric current or potential difference and acts
as a gate for electronic signals
Urbanization Process of the transformation of land to cities
Valence (or valance number) Number of electrons present in outermost orbit (or
shell) of an atom
Valency Measure of its combining power with other atoms when it forms molecules
Vector (in the context of epidemiology) Living organisms that can transmit infection among humans or from animals to humans
Velocity The rate of change of displacement with respect to frame of reference
Venereology Branch of medicine that deals with disorders transmitted through
sexual contact
Vermicompost Composting process that uses earthworms
Very preterm birth A newborn with gestation period less than 32 weeks
Virus Small intracellular parasites that contain RNA or DNA genome bounded by
a protein coat
Virtual image Image appears to be formed when light rays that originate from
object diverge but cannot be projected onto a screen
Viscosity Fluid property that relates the resistant to gradual deformation
Volatile Substance that evaporates readily
Volcanic eruption Outbreak of volcano
Volt Units of electric potential
Volume reduction (in the context of solid waste) Processing waste to decrease
the volume
Volumetric strain The change in volume divided by the original volume
Wastewater Water let out after use from community, home, farm, institution or
industry
Glossary
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