Scientific Root Words (O's)

Front 1

ob-

Back 1

against

Front 2

ocul-

Back 2

eye

Front 3

oct-

Back 3

eight

Front 4

odont-

Back 4

tooth

Front 5

-ond

Back 5

form, appearance

Front 6

olf-

Back 6

smell

Front 7

oligo-

Back 7

few, little

Front 8

-oma

Back 8

abnormal condition, tumor

Front 9

omni-

Back 9

all

Front 10

onc-

Back 10

mass, tumor

Front 11

oo-

Back 11

egg

Front 12

opthalm-

Back 12

eye

Front 13

opt-

Back 13

eye

Front 14

orb-

Back 14

circle, round, ring

Front 15

-orium, -ory

Back 15

place for something

Front 16

ornith-

Back 16

bird

Front 17

orth-

Back 17

straight, correct, right

Front 18

oscu-

Back 18

mouth

Front 19

-osis

Back 19

abnormal condition

Front 20

oste-

Back 20

bone

Front 21

oto-

Back 21

ear

Front 22

-ous

Back 22

full of

Front 23

ov-

Back 23

egg

Front 24

oxy-

Back 24

sharp, acid, oxygen