From Longman Dictionary of Contemporary Englishdeep vein thrombosisˌdeep vein thromˈbosis noun [uncountable] medical (abbreviation DVT) a serious illness which happens when a small amount of blood becomes very thick and causes the heart to stop beating properly. This sometimes happens to people who have been on long plane journeys, because they have been sitting still for so long
Examples from the Corpus
deep vein thrombosis• The symptoms of a deep vein thrombosis are very clear.• The pope has ordered the Roman Catholic archbishop of Cardiff to be replaced until he recovers from deep vein thrombosis.• Anti-embolic stockings were fitted to help prevent deep vein thrombosis. 