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1. A very small pipette used in microinjection.
2. A pipette used to measure or draw very small amounts of liquids.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a very fine pipette used for the transference, measurement, or injection of very small volumes of liquid
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
or mi•cro•pi•pet(ˌmaɪ kroʊ paɪˈpɛt, -pɪ-)
a very slender pipette for transferring or measuring minute amounts of fluid, microorganisms, etc.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.