oculo-
Eye
-ode, -oid
Form, shape, resemblance
-odynia, odyno-
Pain
olig-, oligio-
Few; small
-ology
science of; study of
-oma
Tumor
Onco-
Tumor; swelling; mass
Oo-, ovi-, ovo-
Egg, ovum
oophor-, oophoro-, oophoron
Ovary
ophthalm-, ophthalmo-
Eye
-opia
Vision
optico-, opto-
Eye, vision
orchi-, orchid-, orchido
Testicle
orth-, ortho-
straight, correct, normal, in proper order
Os-
Mouth; bone
-osis
condition; status, process, abnormal, increase
Oste-, osteo
Bone
ostomosis, -ostomy, -stomosis, -stomy
created mouth or opening
Ot-, oto
Ear
-otomy
Cutting
-ous
Pan-
All; entire
para-, -para
path-, patho-, -path, -pathic, -pathy
disease, suffering