Compare with permanent hardness and water hardness .The component of total water hardness that can be removed by boiling the water. Ca(HCO3)2 and Mg(HCO3)2_ are responsible for temporary hardness.
TEMPORARY HARDNESS (TEMPORARY WATER HARDNESS)
Meaning of TEMPORARY HARDNESS (TEMPORARY WATER HARDNESS) in English
General chemistry English glossary. Английский глоссарий общей химии. 2012