[ mer-uh-stem ]
/ ˈmɛr əˌstɛm /
embryonic tissue in plants; undifferentiated, growing, actively dividing cells.
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Origin of meristem
1870–75; < Greek merist(ós) divided, distributed (equivalent to *merid-, stem of merízein to divide into parts (derivative of méris part, share) + -tos verbal adjective suffix) + -em < Greek -ēma termination of nouns denoting result of action; cf. -eme
Words nearby meristem
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for meristem
/ (ˈmɛrɪˌstɛm) /
a plant tissue responsible for growth, whose cells divide and differentiate to form the tissues and organs of the plant. Meristems occur within the stem (see cambium) and leaves and at the tips of stems and roots
Derived forms of meristemmeristematic (ˌmɛrɪstɪˈmætɪk), adjective
Word Origin for meristem
C19: from Greek meristos divided, from merizein to divide, from meris portion
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
Scientific definitions for meristem
[ mĕr′ĭ-stĕm′ ]
Plant tissue whose cells actively divide to form new tissues that cause the plant to grow. The originally undifferentiated cells of the meristem can produce specialized cells to form the tissues of roots, leaves, and other plant parts. The meristem includes the growing tips of roots and stems (the apical meristems) and the tissue layer known as cambium.
Other words from meristemmeristematic adjective (mĕr′ĭ-stə-măt′ĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for meristem
[ (mer-i-stem) ]
The region on a plant where division of cells (and hence growth) occurs. Usually, meristems are found in the shoots and root tips, and places where branches meet the stem. In trees, growth occurs in the cambium — the layer just beneath the bark.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.