Etymograph

English

root zone

From root + zone.

A compound of root + zone

Proto-Indo-European *wréh₂ds ‘root’

Proto-Germanic *wrōts ‘root’

Old Norse rót ‘root’

Old English rōt ‘root’

Middle English rote ‘underground part of a plant’

English root

Proto-Indo-European *yoh₃snéh₂

Ancient Greek ζώνη ‘belt, sash, girdle’

Latin zōna ‘belt’

English zone

Today it means

noun The region of soil in which the roots of plants can effectively extract water and nutrients essential for growth.

Sources

Sources: Wiktionary, “root zone”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / root zone