- an adventitious root that supports the plant, as the aerial roots of the mangrove tree or of corn.
Origin of prop root
First recorded in 1900–05
Also called brace root.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a root that grows from and supports the stem above the ground in plants such as mangroves
- An aerial root that arises from a stem or trunk, penetrates the soil, and helps support the stem, as in mangroves.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.