Skip to Content
Medical Term:


Pronunciation: tef'ri-lom'e-ter


An instrument for measuring the thickness of the cerebral cortex; it consists of a graduated tube of thin glass that is inserted into the brain substance, so the depth of the gray matter can be read off on the scale.

[G. tephros, ashen, + hyle, stuff, + metron, measure]

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