A nerve fiber having a conduction velocity of about 40 meters per second.
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Read more in this article about some frequently asked questions and fun facts related to our definitions.
The Letter B Once Had A Much Longer Name
The letter B was part of the Phoenician alphabet more than 3000 years ago in 1000 BCE. At that time, the letter was called beth and looked a little different, but it made the sound of b and was second in the alphabet. The shape of the letter resembled the floor plan of a house, and the word beth meant “house.” This is pictured below. In Hebrew, the letter was called beth, bet, or bayt which also …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.