Weber's test

[vābərz]
n.
  1. A test for differentiating conductive hearing impairment from sensorineural hearing impairment. A vibrating tuning fork is applied to one of several points in the midline of the forehead; if the sound is heard better in the impaired ear, the middle-ear apparatus is at fault; if the sound is heard better in the normal ear, the hearing impairment is caused by diseased sensorineural apparatus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.