a-, an-

No, lacking, none 

ab-

Away from, out from

abyss-

Deep, bottomless 

ac-

To, toward

-aceus, -aceous

Of or pertaining to

acou-

Hearing

acr-, acro-

Extreme, peak 

actin-

A ray, spoke 

ad-

To, toward

adeno-

Gland

aero-

The air

agri-

Field, soil

-al

Having character of

alb-

White

-alexi

To ward off 

-algia

Pain

allo-

Other, different

alto-

High

ambi-

On both sides

ameb-

Change, alteration

amphi-, ampho-, amb-

Leading a double life, both

ana-

Up 

andro-

Masculine, man

anemo-

Wind

angio-

Vessel 

ante-

Before, ahead of time

antero-

Front

anth-

Flower

anthropo-

Man

anti-

Against 

ap-

To, toward

apic-

Tip, end

apo-

Off, away

-apsis

Juncture

aqu-

Water

arachn-

A spider

arch-

Primitive, ancient

arthro-

Joint 

aster-, astr-

Stars

atom-

Vapor

audi-

Hear

auto-

Self 

aux-

Grow, enlarge 

bactr-

Stick, club

barb-

Beard

baro-

Weight

bath-

Depth, height 

bene-

Well, good

bentho-

Depths 

bi-

Two, twice, double

bio-

Life, living 

-blast

Sprout, germ 

brachi-

Having arms

branchi-

Having fins

brev-

Short

bronch-

Windpipe

bryo-

Moss 

cala-

Insert

calor-

Heat

carb-

Coal, carbon 

cardi-

Heart

carn-

Meat

carp-

Fruit

carpal-

Wrist

cata-

Down 

caud-

Tail

cell-

Storeroom, chamber

-cene

New, recent

-centesis

A puncture

centi-

Hundredth

centr-

Center 

cephal-

Head 

ceric

Neck

chem-

Chemical 

chlor-

Green

choano-

Funnel

chondro-

Cartilage 

chord-

A string

chrom-

Color 

chym-

Juice

-cide

Killing

cili-

Hair 

circ-

Around, about 

circa-

A circle

cirro-

Hair like curls

clade-

Branch

cline-

A slope

cnido-

A nettle

co-

With, together 

cocc-

Seed

-coel

Hallow 

coel-

Hollow

coeno-

Common 

coit-

A coming together 

coleo-

A sheath 

coll-

Glue 

com-

With, together

con-

With, together

coni-

Cone

contra-

Against 

cope-

An oar 

corp-

Body

cortex-

Shell 

cosmo-

World, order, form

cotyl-

Cup

counter-

Against

crani-

The skull 

crypt-

Hidden, covered 

cumul-

Heaped

cuti-

Skin

-cycl

Ring, circle 

cyst-

Bladder, pouch

cyt-, cyte-

Cell, receptacle

dacty-

Finger

de-

Down, out 

de-

From, down, out 

deca-

Ten

deci-

Tenth

-del

Visible 

deliquese-

Become fluid

demi-

Half

dendro-

Tree 

dent-

Tooth

dentri-

Tree

derm-

Skin

detrit-

Wear off

deutero-

Second 

di-

Two, double 

dia-

Through, across

digit-

Finger, toe

-dilat

Expanded 

din-

Terrible

dino-

Terrible 

dis-

Apart ,out 

-diure

Urinate

dorm-

Sleep 

dors-

Back

du-, duo-

Two

-duct

Lead

dyan-

Dark blue

dynam-

Power

dys-

Ill, bad

ec-

Out of, outside

ecdys-

An escape

echin-

Spiny, prickly

eco-

House

ect-

Outside, without 

-ectomy

Removal of 

electro-

Electric, electricity

-ell 

Small 

-em

Made

-emia

Blood

en-

In, into

encephal-

Brain 

enchyma-

An infuision