cryptomenorrhea
(krĭp′tō-mĕn′ə-rē′ə)- Occurrence of the menses without any external flow of blood, as in cases of imperforate hymen.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.