Y07W33VC Word Roots — -geo- (earth)

The root ‑geo‑ comes from Greek and carries the core meaning of ‘earth’. It appears in words connected to the planet’s physical features, spatial relationships, mapping, and the scientific study of the natural world. Understanding this root unlocks the meaning of many academic and formal English words. This module explores six such words drawn from the Academic Vocab list, plus three further examples in the Word Families section.

Word Families

These three words all connect to the root -geo-. As you read, notice how the meaning 'earth' helps you unlock each word and use it more accurately.

geography

/dʒiːˈɒɡ.rə.fi/

ge‑og‑ra‑phy

noun

The study of the Earth, its peoples, places, climate, landscapes, and the interactions between people and their environment.

Example: Geography classes teach students about continents, mountains, rivers, and human societies.

Synonyms: earth science, study of places

Collocations: study geography, geography class, geography teacher

geology

/dʒiːˈɒl.ə.dʒi/

ge‑ol‑o‑gy

noun

The scientific study of rocks, minerals, and the structure and processes of the Earth, including the Earth's history.

Example: Geology reveals how the Earth has changed over billions of years through earthquakes and volcanic eruptions.

Synonyms: earth science, study of rocks

Collocations: study geology, geology field trip, geology expert

geometry

/dʒiːˈɒm.ə.tri/

ge‑om‑e‑try

noun

The branch of mathematics concerned with the study of shapes, sizes, angles, and the properties of space.

Example: In geometry, students learn to calculate areas, volumes, and angles of various shapes.

Synonyms: mathematics, shape study

Collocations: study geometry, geometry problem, geometry theorem

Academic Vocab

establish

/ɪˈstæb.lɪʃ/

es‑tab‑lish

verb | [establish – established – established]

To set up or create something that will last; to prove or demonstrate something beyond doubt; to bring into existence.

Word family: establishment (n.), established (adj.)

Example: Geologists have established that the Earth was formed approximately 4.5 billion years ago.

Synonyms: create, found, prove

Collocations: establish the fact, establish a connection, establish the date

determine

/dɪˈtɜː.mɪn/

de‑ter‑mine

verb | [determine – determined – determined]

To decide or settle something; to find out or ascertain the exact nature or cause of something.

Word family: determination (n.), determined (adj.)

Example: Scientists use geological methods to determine the age of rocks and fossils.

Synonyms: decide, find out, establish

Collocations: determine the age, determine the cause, determine the fact

define

/dɪˈfaɪn/

de‑fine

verb | [define – defined – defined]

To explain the meaning of something precisely; to state or describe the exact nature or boundaries of something.

Word family: definition (n.), definable (adj.)

Example: Geography is defined as the study of the Earth, its peoples, and its features.

Synonyms: explain, describe, specify

Collocations: define the term, define the boundary, define the concept

set

/set/

set

verb | [set – set – set]

To put in a particular position or place; to establish or fix something at a particular level or standard.

Word family: setting (n.), set (adj.)

Example: Continental drift has set the continents in their current geographical positions.

Synonyms: place, position, establish

Collocations: set the standard, set the boundary, set the parameters

confirm

/kənˈfɜːm/

con‑firm

verb | [confirm – confirmed – confirmed]

To state or prove that something is true, correct, or definite; to make certain or official.

Word family: confirmation (n.), confirmed (adj.)

Example: Recent satellite data confirms that sea levels are rising due to climate change.

Synonyms: verify, establish, prove

Collocations: confirm the finding, confirm the fact, confirm the theory

X establishes

/ɪˈstæb.lɪʃɪz/

establishes

phrase (discourse marker)

A sentence-starter phrase used to introduce evidence or research that proves or demonstrates something.

Example: The research establishes that volcanic activity shaped the landscape of this region.

Synonyms: X shows, X proves, X demonstrates

Collocations: research establishes, study establishes, evidence establishes

Confusing Words

in spite of vs despite

These phrases are often confused because they have the same meaning and can be used interchangeably, though they differ in formality and structure.

  • in spite of — In spite of (three words) means 'notwithstanding' or 'regardless of'; it introduces a contrast between a situation and an expected or surprising outcome. For example: In spite of the harsh climate, life thrives in the Arctic. He succeeded in spite of many obstacles.
  • despite — Despite (one word) has exactly the same meaning as 'in spite of'. It is slightly more formal and concise. For example: Despite the harsh climate, life thrives in the Arctic. She won the award despite having less experience.

Memory rule: In spite of and despite mean the same thing. Use 'despite' for a more formal or concise option. Never write 'despite of' — it is grammatically incorrect.