vita

(vital, vitamin)

demo

(democratic, epidemic)

stereo

(stereotype)

ism

(communism, cubism)

cogn

(cognative, recognize)

sur

(surplus, surmountable)

astr

(astrology)

dyna

(dynamic, dynasty)

chron

(chronology, chronological)

hyper

(hyperactive)

luna

(lunar, lunatic)

octa

(octogon, octopus)

gyro

(gyroscope)

contra

(contrary, contrast)

geo

(geometry, geography)

helio

(heliocentric)

thermo

(thermometer)

tetra

(tetrachloride, tetrahedron)

meter

(thermometer)

scope

(microscope, telescope)

son

(sonic)

dec

(decimal, decagon)

stell

(stellar)

amat

(amiable, amateur)