How Did Earth Get Its Name?

How Did Earth Get Its Name
Earth gets its name from old English and German words for ground.

The name “Earth” is unique among the planets in our solar system. Unlike the other planets named after Roman or Greek gods and goddesses, Earth’s name has a more terrestrial and ancient origin. Mainly this is because the name predates humanity’s understanding that we live on a planet. Earth gets its name for the ground we walk on.

Etymology of “Earth”

The word “Earth” has roots in various languages, primarily Old English and Germanic languages. The Old English word “eorðe” and the Germanic word “erde” both mean “ground” or “soil.” These wordsderive from the Proto-Germanic word “erþō,” which in turn comes from the Proto-Indo-European root “*er-,” meaning “earth,” “ground,” or “soil.”

The transition from “eorðe” in Old English to “Earth” in modern English illustrates the linguistic evolution over centuries. The Old Saxon “ertha” and Middle Dutch “aerde” also share similar origins, indicating a common linguistic ancestry among Germanic languages.

Other Names for Earth

Different cultures have various names for Earth, reflecting unique linguistic and cultural perspectives:

  • Terra: The Latin word “Terra” means “earth” or “land.” In scientific contexts, “Terra” is still common, especially in terms like “terra firma” (solid ground).
  • Gaia: In Greek mythology, Gaia (or Gaea) is the personification of Earth. The name reflects the ancient Greek view of Earth as a goddess and a living entity.
  • Tellus: Another Latin term, “Tellus,” was used in Roman mythology to refer to the Earth goddess. “Telluric” phenomena pertain to Earth in geological or geophysical contexts.
  • Orbis: The Latin word “Orbis” typically means “circle” or “disk”, but sometimes refers to the globe. “Orbis Terrarum” translates to “circle of lands,” a term the Romans used that referred to the known world.
  • Mundus: “Mundus” is another Latin term, meaning “world” or “universe.” It carries a more comprehensive connotation, referring to the entirety of the cosmos, including the Earth. In medieval Latin, “mundus” refers to the Earth as the realm of human existence, distinguishing it from the heavens and the divine.

Historical Timeline of the Term’s Use

The name “Earth” has been in use for approximately 1,500 years. The Old English term “eorðe” appeared around the 5th century, and its usage evolved over time into the modern English “Earth.”

  • Ancient Times: The concept of Earth as “ground” or “soil” predates written history. Early humans perceived the land they walked on as a distinct entity from the heavens or the sea.
  • Old English Period (5th to 11th Century): The term “eorðe” describes the ground and later the planet as a whole.
  • Middle English Period (11th to 15th Century): The word evolves into “erthe,” reflecting changes in pronunciation and spelling.
  • Modern English (16th Century to Present): “Earth” became the standardized term for our planet.

Older Names for Planet Earth

Of course, history goes back much further than 1500 years! Ancient civilizations had their own names and conceptions of the planet.


In Mesopotamian mythology, the Earth was the goddess Ki or Ninhursag. Ki was one of the primordial deities in the Sumerian pantheon, representing the Earth and its fertile aspects. The Akkadians, who followed the Sumerians, referred to the Earth as Ereshkigal. Ereshkigal was the queen of the underworld, signifying the connection between the Earth and the afterlife.

Ancient Egypt

In ancient Egypt, the Earth was the god Geb. Geb was often depicted lying beneath the sky goddess Nut. The Egyptians saw Geb as a source of life, fertility, and sustenance. The name Geb also referred to the Earth in a mythological and symbolic sense.

Ancient China

The concept of Earth ties into Chinese cosmology and philosophy. The term “Di” (地) referred to the Earth. In Chinese cosmology, the Earth was one of the five elements (Wu Xing) and was associated with wood and qualities of stability, nourishment, and balance.

Ancient Greece and Rome

In Greek mythology, the Earth was Gaia (or Gaea), the primordial goddess who gave birth to the Titans. Gaia was the mother of all life, encompassing the physical Earth and its fertile qualities. The Romans later adopted this concept, naming the Earth goddess Terra Mater (Mother Earth).

Indigenous Cultures

Various indigenous cultures around the world have their own unique names and conceptions of the Earth. For example:

  • The Native American Hopi tribe refers to the Earth as Tuuwaqatsi, meaning “world” or “Earth.”
  • In Hinduism, the Earth is the goddess Prithvi or Bhumi, representing the nourishing and sustaining aspects of the planet.

The Names of the Other Planets

Most of the other planets in the solar system take their names for Roman deities, reflecting the influence of Roman culture and mythology on astronomical nomenclature. Here’s a brief overview:

  • Mercury: The Roman messenger god, known for his speed.
  • Venus: The Roman goddess of love and beauty.
  • Mars: The Roman god of war.
  • Jupiter: The king of the Roman gods.
  • Saturn: The Roman god of agriculture and time.
  • Uranus: An exception, Uranus takes its name after a Greek deity, the personification of the sky (Uranus/Ouranos), reflecting the influence of Greek mythology. The Roman name for the god is Caelus.
  • Neptune: The Roman god of the sea.
  • Pluto (though reclassified as a dwarf planet): The Roman god of the underworld.

Why Earth’s Naming Differs

Unlike other planets named after deities from Roman mythology, Earth’s name is more “grounded” in daily human experience. This difference arises from a few factors:

  1. Ancient Understanding: Ancient cultures did not initially conceive of Earth as a planet among others. Earth was the central, stable ground, while the other celestial bodies were distant and distinct entities.
  2. Cultural Evolution: As astronomical knowledge advanced and other planets got names in accordance with the mythological and cultural frameworks of the time, particularly those of the Romans and Greeks.
  3. Human Perspective: Earth’s name reflects humanity’s immediate environment and existential experience. The ground beneath our feet is a fundamental aspect of survival and daily life, naturally leading to its simple, descriptive name.


  • Simek, Rudolf (2007). Dictionary of Northern Mythology. Translated by Hall, Angela. D.S. Brewer. ISBN 978-0-85991-513-7.
  • Stevenson, A. (ed.) (2010). “Earth.” Oxford English Dictionary (3rd ed.). Oxford, England: Oxford University Press. ISBN 978-0-19-957112-3. doi:10.1093/acref/9780199571123.001.0001