a-, an-

not, without

ex: atheist, atypical

amphi-, ampho-

both, on both sides of, around

ex: amphibious, amphitheater

ana-, an-

up, back, again

ex: analysis, aneurysm

anti-, ant-

against, opposite

ex: antagonist, antitoxin

apo-, ap-

from, off, away

ex:apology, apostle

cata-, cat-

down, against, according to, very

ex:catalyst, catastrophe

dia-, di-

through, across, between

ex: diameter, diagnosis

ALG-

pain

ex: nostalgia, analgesic

ARTHR-

joint, speech sound, articulation

ex: athritis, disarthria

BI-

life

ex: biography, biopsy

BALL-, BOL-, -BLE

to throw, put

ex: metabolism, hyperbole

BRADY-

slow

ex: bradylexia, bradycardia

CRYPT-

hidden

ex: cryptogram, cryptogenic

DROM-

running, course

ex: syndrome, dromedary

GE-

earth

ex: geology, amphigean

HOD-, OD-

road, way

ex: period, hodophobia

MNE-

to remember

ex: mnemonic, amnesia

MORPH-

form

ex: metamorphosis, morphology

ODONT-

tooth

ex: mastodon, orthodontist

PHOR-, PHER-

to bear, go

ex: periphery, euphoria

PLEX-/PLEG-

stroke/paralysis

ex: apoplexy, paraplegia

POD-, -PUS

foot

ex: tripod, podium

PROCT-

anus, rectum

ex: proctology, cytoproct

STOL-, STAL-, -STLE

to send, contract

ex: systole, peristalsis

STOM-, STOMAT-

mouth, opening

ex: stomach, stomatitis

TROP-, TREP-

to turn, response to stimulus

ex: heliotrope, treponemiasis

UR-

urine, urinary system

ex: uremic, urolithiasis

dys-

bad, disordered, difficult

ex: dysfunction, dystrophy

es-, eis-

inward, into

ex: esoteric

ec-, ex-

out, out of, outside

ex: eccentric, exodus

en-, em-, el-

in, into, inward

ex: energy, elliptical

en- + anti-

opposite

ex: enantiolalia, enantiopathic

endo-, ento-, ene-, ent-

within, inner

ex: endocrine, entoptic

epi-, ep-

upon, on, to, in addition to

ex: epidemic, ephemeral

eu-

well, good, normal

 ex: eulogy, eugenics

exo-, ecto-

outside, external

ex: exotic, exoskeleton

BUL-, BOUL-

will

ex: hyperbulia, paraboulia

CARDI-

heart

ex: cardioblast, myocardial

CEPHAL-/ENCEPHAL-

head/brain

ex: cephalopod

CHONDR-, CONDRI-

cartilage, granule

ex: hypochondriac, synchondrosis

DEM-

people, country

ex: democracy, pandemic

DERM-, DERMAT-

skin

ex: mesoderm, dermographia

GAM-

marriage, union

ex: bigamy, monogamy

LECITH-

yolk

ex: lecithin, centrolecithal

OPHTHALM-

eye

ex: photophthalmia, ophthalmogyric

OST(E)-

bone

ex: osteopath, angiosteosis

PHYLL-

leaf

ex: phyllotaxy, adenophyllous

PHYT-

plant, growth

ex: neophyte, zoophyte

PLAS(T)-

to form, mold

ex: plastic, cytoplasm

SOM-, SOMAT-

body

ex: acrosome, somite

THEC(A)-

case, sheath

ex: bibliotheca, thecodont

THERM-

heat

ex: thermometer, thermal

TOM-/ENTOM-

to cut section/insect

ex: dermatome, myotome

TOP-

place

ex: topography, isotope

TROPH-

nourishment, development

ex: autotroph, metatrophic

ZO-

animal, living being

ex: zoology, zodiac