alternation

alternation definition - medical

al·ter·na·tion (ôlˌtər-nāˈshən, ălˌ-)

noun
Successive change from one thing or state to another and back again.

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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