plant kingdom

American  

noun

1. the plants of the world collectively.

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plant kingdom British  

noun

1. a category of living organisms comprising all plants but excluding the algae, fungi, and bacteria Compare animal kingdom mineral kingdom

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plant kingdom Cultural  

1. One of the five kingdoms of living things. Most plants derive energy from photosynthesis.

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Etymology

Origin of plant kingdom

First recorded in 1880–85

Example Sentences

The researchers believe this approach may be more widespread across the plant kingdom than previously thought.

From Science Daily • Feb. 3, 2026

Convergence is widespread in the plant kingdom as well: carnivorous plants evolved at least a dozen times, roots evolved more than once, and even arborescence—plants taking the form of trees—evolved more than once.

From Scientific American • Aug. 15, 2023

But recent research from the plant kingdom shows that a mouth isn’t essential.

From New York Times • Mar. 30, 2023

This is a fairly common behavior in the plant kingdom, but almost every example is found in orchids, a type of flower that numbers over 28,000 species.

From Salon • Mar. 26, 2023

It is by precisely the same principle that the ur-plant reveals itself in the plant kingdom as a whole.

From Man or Matter by Lehrs, Ernst