Skip to Content


Pronunciation: mi-sel', mi-sel'


  1. Nägeli term for elongated sub(light)microscopic particles, detected in hydrogels, of supramolecular character and crystalline structure; now defined as one of two classes of colloidal particle: those consisting of many molecules, the other class being single macromolecules light- or submicroscopic in size. A micelle is thus a structural unit of the disperse phase in a gel, a unit whose repetition in three dimensions constitutes the micellar structure of the gel; it does not denote the individual particles in free suspension or solution, or the unit structure of a crystal.
  2. Any water-soluble aggregate, spontaneously and reversibly, formed from amphiphile molecules.
  3. A hypothetical ordered region in a natural fiber such as cellulose.

[L. micella, small morsel, dim. of mica, morsel, grain]

Disclaimer: This site is designed to offer information for general educational purposes only. The health information furnished on this site and the interactive responses are not intended to be professional advice and are not intended to replace personal consultation with a qualified physician, pharmacist, or other healthcare professional. You must always seek the advice of a professional for questions related to a disease, disease symptoms, and appropriate therapeutic treatments.
© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.