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primary growth

noun, Botany
1.
growth in vascular plants, especially an increase in length, that results from cell division and differentiation of an apical meristem.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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primary growth in Science
primary growth  
Growth in vascular plants resulting from the production of primary tissues by an apical meristem. The plant body grows lengthwise chiefly by the enlargement of cells produced by the apical meristem (rather than by cell division). Because they lack secondary tissues, most monocots and herbaceous plants grow solely by primary growth until they reach maturity, when growth stops. Compare secondary growth.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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