List of Common Greek Root Words

Study common Greek roots, their meanings, and example words for vocabulary and language arts practice.

Most Common Greek Root Words

  • aero - air: aerobics, aerodynamics, aeronautics, aerate
  • arch - ruler or leader: monarch, archbishop, matriarch
  • ast - star: astronaut, astronomy, disaster, asterisk, asteroid
  • biblio - book: bibliography, Bible, bibliotherapy
  • bio - life: biology, biography, biochemistry, biopsy, biosphere
  • chron - time: chronological, synchronize, chronicle, chronic
  • cosm - universe: cosmonaut, cosmos, cosmopolitan, microcosm
  • cycl - circle or ring: bicycle, cyclone, cycle, encyclopedia, recycle
  • dem - people: democracy, demography, endemic, epidemic
  • gen - birth or race: generation, generate, genocide, progeny, genealogy
  • geo - earth: geography, geometry, geology, geophysics
  • gnos - know: diagnose, prognosis, agnostic
  • gram - letter or written: telegram, diagram, grammar, epigram, monogram
  • graph - write: photograph, phonograph, autograph, biography, graphite
  • mech - machine: mechanic, mechanism, mechanize
  • meter - measure: thermometer, centimeter, diameter, barometer
  • onym - name: synonym, antonym, pseudonym, anonymous
  • opt - eye: optician, optometrist, optic, optical
  • ortho - straight or right: orthodontist, orthodox, orthopedist, orthography
  • path - disease or feeling: pathology, sympathy, empathy
  • ped - child: pedagogy, pediatrician, encyclopedia
  • phon - sound: phonograph, symphony, telephone, microphone, phonics
  • photo - light: photograph, telephoto, photosynthesis, photogenic
  • poli - city: metropolis, cosmopolitan, police, political
  • psych - mind or soul: psychology, psyche, psychopath, psychiatrist
  • saur - lizard: dinosaur, brontosaurus, stegosaurus
  • scop - see: microscope, telescope, periscope, stethoscope
  • soph - wise: philosopher, sophomore, sophisticated
  • therm - heat: terminal, terminate, determine, exterminate

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