The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Examples from the Web for root system
It is not necessary to try to shape the root-system to any formal regularity.
Success in using the antidote depends upon bringing it in contact with every part of the root-system of the plant.The Galaxy, April, 1877
As a good part of the root-system is destroyed when the tree is dug, so is the top reduced to insure something like a balance.
This may give an idea of the odd and strange appearance of the root-system in a mangrove forest.The Romance of Plant Life
G. F. Scott Elliot