Pronunciation: (mī'kru-prōb"), [key]
1. Chem., Spectroscopy. a device used to excite radiation by a material in order to determine chemical or elemental composition from the emission spectrum produced.
2. Surg.a miniature probe for use in microsurgery.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.