hypovolemia Syllabification: (hy·po·vo·le·mi·a)Pronunciation: /ˌhīpōvəˈlēmēə/ (Britishhypovolaemia)Definition of hypovolemia noun Medicine a decreased volume of circulating blood in the body. Derivatives hypovolemicPronunciation: /-ˈlēmik/ adjective Origin: early 20th century: from hypo- 'under' + volume + Greek haima 'blood'hypovolemia in other Oxford dictionaries Definition of hypovolemia in the British & World English dictionary