the propagation of plants from tissue cultures, often from single cells.
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British Dictionary definitions for micropropagation
botany the production of a large number of individual plants from a small piece of plant tissue cultured in a nutrient medium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012