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Chapter 9 Terms
Chapter 9 Terms
18
Microbiology
Undergraduate 2
11/02/2016

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Term
Sterilization
Definition
the process that destroys or removes all viable MOs (including viruses)
Term
Disinfection
Definition
physical process or a chemical agent that destroys vegetative pathogens but not bacterial endospores

Removes harmful products of MOs (toxins) from material
Term
Decontamination or Sanitzation
Definition
cleansing technique that mechanically removes MOs as well as other debris to reduce contamination to safe levels
Term
Antisepsis/degermation
Definition
reduces the # of microbes on human skin
Term
Sepsis
Definition
the growth of microorganisms in the blood and other tissues
Term
Asepsis
Definition
Any practice that prevents the entry of infectious agents into sterile tissues and thus prevents infection
Term
Aspetic techniques
Definition
practiced in healthcare; range from sterile methods to antisepsis
Term
What does the root -stasis or static mean
Definition
to stand still or to pause
Term
What does the root -cidal mean
Definition
to have the ability to kill
Term
death
Definition
permanent termination of an organism’s vital processes is called?
Term
Thermal Death Time
Definition
What does TDT stand for
Term
TDT
Definition
What is the shortest length of time required to kill all test microbes at a specified temperature called?
Term
Thermal death point
Definition
What does TDP stand for?
Term
TDP
Definition
what is the lowest temperature required to kill all microbes in a sample in 10 minutes called?
Term
Radiation
Definition
Energy emitted from atomic activities and dispersed at high velocity through matter or space is called?
Term
Aqueous solutions
Definition
chemicals dissolved in pure water as the solvent are called?
Term
Tinctures
Definition
chemicals dissolved in pure alcohol or water-alcohol mixtures are called?
Term
Dilutions
Definition
a small volume of the liquid chemical is diluted in a larger volume of solvent to achieve a certain ratio is called?
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