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 (vĕn′ĭ-sĕk′shən, vē′nĭ-)
[New Latin vēnae sectiō : Latin vēnae, genitive sing. of vēna, vein + Latin sectiō, sectiōn-, cutting; see section.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Surgery) surgical incision into a vein
[C17: from New Latin vēnae sectiō; see vein, section]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(fləˈbɒt ə mi)

n., pl. -mies.
the act or practice of opening a vein to let or draw blood as a therapeutic or diagnostic measure. Also called venesection.
[1350–1400; Middle English fleobotomie (< Middle French flebotomie) < Medieval Latin fleobotomia, phlebotomia, Late Latin < Greek phlebotomía; see phlebo-, -tomy]
phleb•o•tom•ic (ˌflɛb əˈtɒm ɪk) adj.
phle•bot′o•mize`, v.t. -mized, -miz•ing.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.venesection - surgical incision into a vein; used to treat hemochromatosis
surgical incision, incision, section - the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)
bloodletting - formerly used as a treatment to reduce excess blood (one of the four humors of medieval medicine)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
In the first part of the study, blood (24 mL) was collected into 3-mL EDTA tubes from each of eight nonpregnant volunteers and divided into four equal portions immediately after venesection. One portion was processed by a previously described two-step centrifugation protocol (8), and the remaining three portions were centrifuged by the gentle centrifugation protocol described in the previous formaldehyde study (7).
The art of venesection should be taught on the vein of a dead animal, or with the help of a lotus stem.
According to Geller (13) venesection was probably introduced to Babylonia only in the late first millennium BC.
Plasma was obtained by centrifugation from the EDTA, heparin, and citrate tubes at four different time points, 0, 2, 6, and 24 h after venesection, respectively, with one tube used for each time point.
To investigate the effectiveness of different anticoagulants on stabilizing sRANKL and OPG activity, plasma/ serum was separated at 15, 30, and 60 min after venesection by centrifugation at 1814g for 10 min at 4 [degrees]C.
Plasma harvesting was performed immediately on arrival at the laboratory (within 1 h of venesection).
Theoretically, to maintain RNA integrity, the time and steps between venesection and RNA extraction should be reduced to the minimum.
Flow cytometric studies of platelet surface antigens have shown that whole-blood samples anticoagulated with CTAD are stable at 20 [degrees]C under standard laboratory conditions for up to 4 h after venesection (2,35).
Transfer of homocysteine from red cells to plasma after venesection may occur and produce a 10% per hour increase in plasma tHcy concentrations (4), and thus influence assessments of the relative risk of disease (5).
We proposed that blood collection using a syringe and needle and blood-processing procedures after venesection might cause the liberation of DNA from blood cells, leading to an apparent change in the cell-free DNA concentration.
Thus, purging, vomiting, cupping, venesection, and leeches figured prominently in the armory of the eighteenth century physician.
No differences were observed between serum and plasma samples taken from the same venesection.