| an adventitious root that supports the plant, as the aerial roots of the mangrove tree or of corn. |
| prop root n. An adventitious root that arises from the stem, penetrates the soil, and helps support the stem, as in corn. Also called brace root. |
| prop root (prŏp) Pronunciation Key
An adventitious root that arises from the stem, penetrates the soil, and helps support the stem, as in corn. |