# earth

/ˈɝθ/ (US) · /ˈɜːθ/ (UK)

Source: https://englishreference.com/word/earth
Updated: 2026-08-15

## Senses

### 1. the planet

noun · CEFR A2

the planet where humans live, the third planet from the sun.

For teachers: the third planet from the Sun in the solar system. Often capitalised when treated as a proper noun.

- From space, Earth looks like a beautiful blue and white marble.
- The satellite was designed to monitor changes in Earth's atmosphere over a ten-year period to track global warming trends.

### 2. soil

noun · CEFR B1

the substance on the surface of the ground in which plants grow.

For teachers: the loose surface material of the globe in which plants grow; soil or dirt.

- She filled the flower pots with rich brown earth before planting the seeds.
- The gardener turned the earth over with a spade to ensure the young saplings had enough oxygen for their roots.

### 3. the ground

noun · CEFR B1

the land or the surface of the world, rather than the sea or sky.

For teachers: the solid surface of the world as distinguished from the surrounding water or air.

- The fallen leaves covered the earth like a thick orange carpet.
- After weeks at sea, the sailors were relieved to finally set foot on solid earth once again.

### 4. electrical connection

noun · CEFR B2 · British English · Technical

a wire that connects an electrical machine to the ground for safety.

For teachers: a connection between an electrical circuit or device and the ground, serving as a safety return path.

- Make sure the green wire is connected to the earth for safety.
- The technician discovered that the fault was caused by a loose earth connection in the main circuit board.

Usage: In American English, 'ground' is used instead of 'earth' for this sense.

### 5. classical element

noun · CEFR B2 · Academic

one of the four basic parts of nature in old philosophy, along with air, fire, and water.

For teachers: one of the four classical elements in ancient and medieval philosophy.

- Ancient philosophers believed that everything was made of earth, air, fire, and water.
- In many esoteric traditions, the element of earth represents stability, physical form, and the material world.

### 6. to connect to ground

verb · CEFR C1 · British English · Technical

to connect a piece of electrical equipment to the ground.

For teachers: to connect an electrical conductor or device to the earth. Transitive use.

- You must earth the metal casing of the lamp to prevent electric shocks.
- The building's lightning protection system is designed to earth the massive electrical discharge safely into the soil.

## Examples

- The Earth is blue because of the oceans.
- In science class, the teacher showed a model of the Earth and explained its layers.
- In religious texts, Earth is often described as the final resting place for human souls, contrasting with heavenly realms.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.