he·​mo·​di·​lu·​tion ˌhē-mō-dī-ˈlü-shən How to pronounce hemodilution (audio)
: decreased concentration of cells and solids in the blood resulting from gain of fluid

Word History

First Known Use

1939, in the meaning defined above

Time Traveler
The first known use of hemodilution was in 1939

Dictionary Entries Near hemodilution

Cite this Entry

“Hemodilution.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hemodilution. Accessed 28 Mar. 2023.

Medical Definition


variants or chiefly British haemodilution
: decreased concentration (as after hemorrhage) of cells and solids in the blood resulting from gain of fluid compare hemoconcentration
: a medical procedure for producing hemodilution
especially : one performed especially to reduce the number of red blood cells lost during surgery that involves the preoperative withdrawal of one or more units of whole blood, immediate replacement with an equal volume of intravenous fluid (as saline solution), and postoperative reinfusion of withdrawn blood
hemodilution can be a safe and cost-effective alternative to preoperative autologous donation P. V. Holland et al.
hemodilute verb
or chiefly British haemodilute
hemodiluted; hemodiluting
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