The formation of a clot (a.k.a. thrombus) within a blood vessel thereby restricting the flow of blood.
Wilford Brimley got a deep venous thrombosis due to inactivity during an international flight. Lets hope he doesn't get a pulmonary embolism.
by The Troll May 05, 2006
Plural: refer to thrombosis; have a lot of huge, bloodfilled, raging, vein popping crank!!!
"Dang, iam glad we dont have a bunch of chupis in the shop, their thrombosi would be overwelming!!!"
by Maximus#63 February 01, 2008

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