venesection

from WordNet (r) 3.0 (2006)

venesection
    n 1: surgical incision into a vein; used to treat
         hemochromatosis [syn: {venesection}, {phlebotomy}]

from The Collaborative International Dictionary of English v.0.48

Venesection \Ve`ne*sec"tion\, n. [NL. venaesectio; L. vena vein
   + sectio section.] (Med.)
   The act or operation of opening a vein for letting blood;
   bloodletting; phlebotomy.
   [1913 Webster]