a-, an-: Without; not
ab-: Away from
ad-: Toward
ambi-: Both
ante-: Before; forward
anti-: Against
auto-: Self
bi-: Two
brady-: Slow
circum-: Around
con-: With; together
contra-: Against; opposite
de-: Down; removal
dia-: Through; complete
dis-: Apart; away
dys-: Painful; difficult; abnormal
ecto-: Outside
endo-: Within
epi-: Upon; above
eu-: Good; normal
ex-, exo-: Outside; out of
extra-: Outside of
hemi-: Half
hetero-: Different
homo-, homeo-: Same
hyper-: Above; excessive
hypo-: Below; deficient
infra-: Below
inter-: Between
intra-: Within
iso-: Equal
macro-: Large
mal-: Bad; poor
meso-: Middle
meta-: Change; beyond
micro-: Small
mono-: One
multi-: Many
neo-: New
non-: Not
oligo-: Few; scanty
pan-: All
para-: Beside; abnormal; near
per-: Through
peri-: Around
poly-: Many; much
post-: After
pre-: Before
pro-: Before; in favor of
pseudo-: False
quadri-: Four
re-: Again; back
retro-: Behind; backward
semi-: Half
sub-: Under
super-, supra-: Above
sym-, syn-: Together
tachy-: Fast
tetra-: Four
tri-: Three
trans-: Across
ultra-: Beyond
uni-: One
pre-natal vs post-natal: Before birth versus after birth
brachy-: Short
mega-, megalo-: Large
olig-: Little
primi-: First
multi-gravida: A woman who has been pregnant more than once
intro-: Into
xero-: Dry
peri vs endo: Peri- is around the outside; endo- is within
hydro-: Water
hemo-, hemato-: Blood
necro-: Death
pyo-: Pus
dextro-: Right
levo-: Left
ortho-: Straight; correct
tox-, toxo-: Poison
pachy-: Thick
lepto-: Thin; slender
pleo-: More

Free flashcards from Peabody at peabody.kids/flashcards/tp-med-prefixes