Greek Roots

anti (Greek) - antiseptic, antibiotic, anticlimax, antisocial, antibody

against, opposite

astro (Greek) - astronomer, astrology, astronaut, astrophysics, asteroid

star

auto (Greek) - autograph, automobile, autobiography, automatic, autopilo

self, same

bio (Greek) - biology, biotic, autobiography, biomechanical, bionic

life

chron (Greek) - chronograph, chronology, chronic, synchronize, chronicle

time

cosm (Greek) - cosmos, microcosm, cosmology, macrocosm, cosmetic

universe, world, order

cracy (Greek) - democracy, theocracy, autocracy, technocracy bureaucracy

type of government

crat (Greek) - democrat, theocrat, autocrat, technocrat, bureaucrat

member of a type of government

cycl (Greek) - bicycle, tricycle, cycle, cyclic, unicycle

circle, wheel

dem (Greek) - demograph, democrat, democracy, demographer, epidemic

people

phon, phono - microphone, telephone, phonograph, phonic, phoneme

sound

photo - photograph, photon, photosynthesis, photoelectric, photogenic

Light

phys - physics, physiology, metaphysics, physical, geophysics

nature, body, natural science

pod, ped - pedal, bipedal, podiatrist, pedestrian, tripod

foot

poly - polygon, polynomial, polytheism, polyandrous, polygraph

many

psych - psychopath, psychology, psyche, psychic, psychiatry

mind

pyro - pyrotechnics, pyrotechnician, pyrolysis, pyromania, pyroclastic

fire

scope - microscope, telescope, scope, stethoscope, periscope

watch, see

tele - television, telescope, telephone, teleport, telekinesis

distance

theo - theology, theocracy, theocrat, theologian, pantheon

god, religion

therm - thermo, thermometer, thermonuclear, thermostat, hypothermia

heat

tri - triangle, trilogy, trident, tricycle, tripod

three

meter - kilometer, hydrometer, speedometer, odometer, metric

measure of

micro - microphone, micrometer, microscope, microbiology, microcosm

small

mis - mistake, misbehave, misnomer, mislead, misplace

bad, badly, wrong, wrongly

mon, mono - monotonous, monotone, monarch, monotheist, monochrome

one

ologist - biologist, geologist, astrologist, physiologist, hydrologist

one who studies

ology - biology, geology, astrology, physiology, hydrology

the study of

pan - pantheism, panorama, pandemonium, pandemic, pantheon

all, every

path - pathological, empathy, sympathy, psychopath, apathy

suffering, sickness, disease

penta - pentagram, pentane, pentameter, pentagon, pentathalon

five

phobia - hydrophobia, acrophobia, agoraphobia, ablutophobia, satanophobia

fear

geo - geologist, geography, geophysics, geometry, geopolitical

earth

gon - polygon, octagon, pentagon, hexagon, septagon

angle

graph, gram - photograph, graphic, polygraph, telegram, hexagram

drawn, written

hemi, semi - hemisphere, semisweet, hemicranial, semi-annual, semiconscious

half

hydro, hydra - hydrate, hydrometer, hydraulic, hydrologist, hydrophobia

water

hyper - hyperspace, hyperactive, hyperactivity, hypercritical, hypersensitive

over, too much, a lot

kilo - kilometer, kilogram, kilobyte, kiloton, kilowatt

one thousand

mania - pyromania, kleptomania, bibliomania, megalomania, maniac

madness, insanity

mech - mechanic, mechanistic, mechanize, biomechanical, mechanism

machine

mega - megabyte, megalopolis, megahertz, megaton, megastar

big