log
Ex: geology
graph/gram
Ex: paragraph
scope
Ex: telescope
photo
Ex: photograph
phon
Ex: phonograph
geo
Ex: geology
tele
Ex: television
phob
Ex: claustrophobia
psych
Ex: psychic
cycl
Ex: bicyle
therm
Ex: thermometer
mech
Ex: mechianical
bio
Ex: biography
chron
Ex: chronological
opt
Ex: optical
cardi
Ex: cardiac
hydr
Ex: hrdrophobic
meter, metr
Ex: meter
phys
Ex: physical