Skip to Content


Pronunciation: mi-krom'e-ter


  1. One millionth of a meter; formerly called micron.
  2. A device for measuring various types of objects in an accurate and precise manner.
  3. medicine, biology usually used with reference to a glass slide or lens that is marked for measuring microscopic forms accurately.

[micro- + G. metron, measure]

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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