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line of demarcation

noun

a boundary marking something off from something else; also called demarcation line

Word Origin

from linea de demarcacion, the Pope's division of the New World between the Spanish and Portuguese

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line of demarcation in Medicine

line of demarcation n.
A zone of inflammatory reaction separating gangrenous from healthy tissue.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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