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Pronunciation: gran'yul


  1. A grainlike particle; a granulation; a minute discrete mass.
  2. A small pill, usually gelatin or sugar coated, containing a drug to be given in a small dose.
  3. A colony of the bacterium or fungus causing a disease or simply colonizing the tissues of the patient. In immunocompromised patients, differentiation is difficult.
  4. A small particle that can be seen by electron microscopy; contains stored material.

[L. granulum, dim. of granum, grain]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.