Skip to content

Word part · Greek combining form

The Greek combining form geo

Means: earth.

At a glance

Part
geo
Meaning
earth
Layer
Greek: Combining forms behind science words, with spellings like ph and ch.

Geo ends in o, so it joins the next part with no extra vowel: geology, geography.

Example words

Read each word, then its sum: the parts that build it, and what they mean together.

Colors:prefixroot or basesuffix

  • geo (root or base)+graphy (root or base)→geography

    the study of the lands and people of the earth

  • geo (root or base)+graph (root or base)+er (suffix)→geographer

    a person who studies geography

  • geo (root or base)+graph (root or base)+ic (suffix)→geographic

    having to do with geography

  • geo (root or base)+logy (root or base)→geology

    the study of rocks and the earth

  • geo (root or base)+log (root or base)+ist (suffix)→geologist

    a scientist who studies rocks and the earth

  • geo (root or base)+log (root or base)+ic (suffix)→geologic

    having to do with geology

  • geo (root or base)+metry (root or base)→geometry

    the math of measuring shapes, lines and angles

  • geo (root or base)+metr (root or base)+ic (suffix)→geometric

    made of simple shapes such as lines and circles

  • geo (root or base)+therm (root or base)+al (suffix)→geothermal

    using heat from deep inside the earth

Original word lists and meanings written by Literacy Trail.