omphal/o - ANSnavel
nulli- - ANSnone
non- - ANSnot
nucle/o - ANSnucleus
netero- - ANSdifferent
obstetr/o - ANSmidwife
o/o - ANSegg, ovum
oophor/o - ANSovary
ov/o - ANSegg, ovum
ovari/o - ANSovary
orchid/o - ANStesticle
orch/o - ANStesticle
orchi/o - ANStesticle
olig/o - ANSfew, scanty, little
ot/o - ANSear
ocul/o - ANSeye
opthalm/o - ANSeye
opt/o - ANSeye, vision
optic/o - ANSeye, vision
or/o - ANSmouth
,odont/o - ANSteeth
onych/o - ANSnail
olecran/o - ANSelbow
orth/o - ANSstraight
oste/o - ANSbone
pyr/o - ANSfire
pedi/a - ANSchild
perine/o - ANSperineum (area between scrotum [or vulva in the female] and anus)
prostat/o - ANSprostate gland
pyel/o - ANSrenal pelvis
py/o - ANSpus
palpebr/o - ANSeyelid
phac/o, phak/o - ANSlens
phot/o - ANSlight
pupill/o - ANSpupil
pancreat/o - ANSpancreas
peritone/o - ANSperitoneum (membrane surrounding organs in the abdomen)
proct/o - ANSanus and rectum
pharyng/o - ANSpharynx
phren/o - ANSdiaphragm (also mind)
pleur/o - ANSpleura (membrane surrounding lungs and adjacent to chest wall)
pne/o - ANSbreathing
, pneum/o - ANSlung, air
pulmon/o - ANSlung
pector/o - ANSpertaining to the chest
poly- - ANSmany
primi- - ANSfirst
pro- - ANSbefore, forward
pre- - ANSbefore, in front of
peri- - ANSaround
para- - ANSbeside, near
purpur/o - ANSpurple
poli/o - ANSgray
pseudo- - ANSfalse, fake
post - ANSafter, behind
per- - ANSthrough
pan- - ANSall
patell/o, patell/a - ANSkneecap
phalang/o - ANSphalanges (bones of the fingers and toes)
por/o - ANSpore, small opening
pub/o - ANSpubis
pelv/i - ANSpelvis
proxim/o - ANSnear
poster/o - ANSback, behind