Skip to Content
Medical Term:


Pronunciation: ro-zet'


  1. The quartan malarial parasite Plasmodium malariae in its segmented or mature phase.
  2. A grouping of cells characteristic of neoplasms of neuroblastic, neuroectodermal, or ependymal origin; nuclei form a ring from which neurofibrils, which can be demonstrated by silver impregnation, extend to interlace in the center (Homer-Wright rosette); arrangement of ependymal cells around a vessel (perivascular pseudorosette) or around a space or channel (transependymal rosette).
  3. Roselike coiling of the uterus among certain pseudophyllidean tapeworms, such as Diphyllobothrium latum.
  4. Cells of one type surrounding a cell of another type.

[Fr. a little rose]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.