noun Pathology.
local deficiency of blood supply produced by vasoconstriction or local obstacles to the arterial flow.
Also, ischaemia.

1855–60; < Greek ísch(ein) to suppress, check + -emia

ischemic [ih-skee-mik, -skem-ik] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
ischaemia or ischemia (ɪˈskiːmɪə)
pathol an inadequate supply of blood to an organ or part, as from an obstructed blood flow
[C19: from Greek iskhein to restrict, + -emia]
ischemia or ischemia
[C19: from Greek iskhein to restrict, + -emia]
ischaemic or ischemia
ischemic or ischemia

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

ischemia is·che·mi·a (ĭ-skē'mē-ə)
A decrease in the blood supply to a bodily organ, tissue, or part caused by constriction or obstruction of the blood vessels.

i·sche'mic adj.
The American Heritage® Stedman's Medical Dictionary
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