Definition of hypothermia in English:
 hypothermia
noun ˌhʌɪpə(ʊ)ˈθəːmɪəˌhaɪpəˈθərmiə
mass nounThe condition of having an abnormally (typically dangerously) low body temperature.
 she was suffering from hypothermia
 Example sentencesExamples
-  The couple had succumbed to a combination of infection and hypothermia.
 -  The winter could bring hypothermia, pneumonia and other respiratory illnesses.
 -  Whether it was the beginnings of altitude sickness, hypothermia, or simply fatigue I have no idea.
 -  As with heatstroke, hypothermia and frostbite victims should always be given medical help.
 -  It is when body energy is exhausted that hypothermia becomes potentially life-threatening.
 
Derivatives
  
adjective
 A victim who is not breathing should not be assumed to be dead: a hypothermic person does not need to breathe very much.
 Example sentencesExamples
-  Flushing the lungs with a hypothermic preservation solution should therefore still be recommended.
 -  Improvements in the surgical procedure including reducing the hypothermic circulatory arrest time may improve outcome.
 -  The dynamic modulus of elasticity decreased in a linear fashion over 60 days of hypothermic storage.
 -  Everett was put into a hypothermic state, his temperature lowered with an icy cold saline solution.
 
Origin
  
Late 19th century: from hypo- 'below' + Greek thermē 'heat'.
   Definition of hypothermia in US English:
 hypothermia
nounˌhaɪpəˈθərmiəˌhīpəˈTHərmēə
The condition of having an abnormally low body temperature, typically one that is dangerously low.
 she was suffering from hypothermia
 Example sentencesExamples
-  As with heatstroke, hypothermia and frostbite victims should always be given medical help.
 -  Whether it was the beginnings of altitude sickness, hypothermia, or simply fatigue I have no idea.
 -  It is when body energy is exhausted that hypothermia becomes potentially life-threatening.
 -  The winter could bring hypothermia, pneumonia and other respiratory illnesses.
 -  The couple had succumbed to a combination of infection and hypothermia.
 
Origin
  
Late 19th century: from hypo- ‘below’ + Greek thermē ‘heat’.