rootwords

know at least one definition

a, an

def: without, not, lack of

ex: anaerobic, asymmetrical

ab

def: away from, from, apart

ex: abnormal, abduct

ad

def: toward, to, near to

ex: adrenal, adduct

ante

def: preceding, before, forward

ex: antecubital

anti

def: against, opposed to

ex: antibiotic

circum, circ

def: around, about

ex: circumcision

co, con

def: with, together

ex: congenital

contra, counter

def: against

ex: contraceptive

de

def: reverse, away from, loss

ex: deactivate

di

def: double, two

ex: disaccharide

dia

def: between, through

ex: diaphragm

ec, ecto, ex

def: outside, away from

ex: excrete, ectoderm

end, em, en

def: inside, within

ex: endothelium, encysted

epi

def: over, above, on

ex: epidermal

ecto, exo

def: outside, outer layer

ex: exocrine

extra

beyond, outside, additionally

ex: extracellular

hemi

def: half

ex: hemisphere

hetero

def: different

ex: heterozygous

homeo, homo, same

def: unchanging, steady

ex: homeostasis

hyper

def: beyond, excessive

ex: hyperglycemic

hypo

def: under, below, different

ex: hypodermic

in, im

def: not, negation

ex: impermeable

inter

def: among, between

ex: intercostal

intra

def: within, inside

ex: intravenous

infra, infer

def: below

ex: infraorbital

iso

def: equal

ex: isometric

macro

def: large, great

ex: macrophage

mal

def: bad, abnormal

ex: malnutrition

medi, meso

def: middle

ex: median

meta

def: after, beyond, changed

ex: metacarpal

mega

def: great, large

ex: megacolon

micro

def: small

ex: microorganism

mono

def: one

ex: monocot

mill(i)

def: one-thousandth

ex: milligram

oligo

def: small, few, little

ex: oliguria

omni

def: all

ex: omnipotent

para

def: near, beside, apart from

ex: paracentric

peri

def: around

ex: pericardial

poly

def: many, much

ex: polycythemia

pre, pro

def: before, in front of

ex: prenatal

philic, philo

def: have an affinity for, like

ex: hydrophillic

phobic

def: fear

ex: hydrophobic

post

def: after, behind

ex: postpartum

pseudo

def: false

ex: pseudopodia

quatr, quadro

def: four

ex: quadricepts

retro

def: backward, back

ex: retroperitoneal

re

def: again, contrary, back

ex: recurrent

semi

def: half

ex: semilunar

sub

def: beneath

ex: subdural

super

def: over, excessive

ex: superficial

supra

def: above

ex: supraorbital

sym, syn

def: together, with, joined

ex: synthesis

trans

def: across, through

ex: transfusion

tri

def: three.

ex: triceps

ultra

def: beyond, excess

ex: ultrastructure