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rhizome

C2
Uncommon

Pronunciation

UK

  • /rˈaɪzəʊm/

US

  • /ˈraɪˌzoʊm/

Meanings

Noun

  1. a horizontal underground plant stem that sends out roots and shoots

  2. a non-hierarchical spreading network or conceptual structure

Beyond the definition

Imagine ginger, bamboo, or some wildflowers. They do not spread only by seeds. They also grow through a special stem that usually runs underground. This stem sends out roots below and new shoots above, helping the plant spread and make new growth.

It may look like a root, but it is actually a stem. It has nodes, or small joints, where new parts can grow. Gardeners may like it because it helps plants fill an area quickly, though some plants with this habit can spread too far. The word comes from a Greek word meaning "root," which fits its appearance, even though it is not a true root.

Examples

  1. 1

    Plant structure

    Ginger grows from a rhizome rather than from a bulb.

  2. 2

    Dividing plants

    When we divided the iris plants, each piece needed a healthy rhizome to grow again.

  3. 3

    Garden spread

    Some garden plants spread quickly by rhizomes and can take over a flower bed.

See also

Similar

Shades of meaning

  • subterranean stem
  • creeping stem

Contrast

Used with (collocations)

  • underground rhizome
  • creeping rhizome
  • rhizome division

Word family

Explore

Forms and spellings

2 forms open this card.

Main spelling

  • rhizomenoun

Forms

  • rhizomespluralnoun