A portion of a total, especially of a block of assets such as cash or securities: the riskiest tranche of the bond offering; money delivered in two tranches. 2. A cut or slice of meat: a tranche of sirloin.
Cold weather is the primary cause of hypothermia. When your body experiences extremely cold temperatures, it loses heat more quickly than it can produce it. Staying in cold water too long can also cause these effects. The inability to produce adequate body heat is extremely dangerous.
The body temperature is just a measure of the body's ability to maintain its temperature levels in spite of the surrounding external temperature. There are various causes of low body temperature, and for a doctor to simply guess what the cause is, would be fairly unprofessional. The lowering of body temperature of an individual usually accompanies many other symptoms, and therefore, a careful investigation is required.