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polysomy
polysomy definition - medical
pol·y·so·my (pŏlˈē-sōˌmē)
noun The state of a cell nucleus in which a specific chromosome is represented more than twice.
The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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