penetrometer Hear it!

penetrometer definition

☆ pen·etrom·eter (pen′i träm′ət ər)

noun

  1. an instrument used to measure the hardness of a substance by inserting a needle into the substance in a prescribed manner
  2. an instrument that measures the penetrating power of X-rays

Etymology: < penetr(ate) + -o- + -meter

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.