Common medical terminology. Suffix, prefix, and root words.

Medical TERMINOLOGY   -   A thru Z

Prefixes, roots, suffixes  [ A ]

[ 1 ] Quick Introduction.

[ 2 ] Word Building Reference (See below): new icon   This is a great reference to help strengthen your understanding of medical terminology.   See how common medical terms are created using the various prefixes, suffixes, and root words.

[ 3 ]  Medical Terms - Singular versus plural rules

[ 4 ]  Medical Terminology Exams  new icon   Twenty new exams were created to test your knowledge of medical terminology. 

[ 5 ]  Medical Terms - Prefixes, roots, suffixes (Reference).
Prefix: A prefix is placed at the beginning of a word to modify or change its meaning. Pre means "before." Prefixes may also indicate a location, number, or time. 
: central part of a word.     
:  The ending part of a word that modifies the meaning of the word.

Example: cholecystitis. Root = 'cholecyst/o' -Definition: gallbladder and the suffix is 'itis' - Definition: inflammation.  Translation:  inflammation of the gallbladder

Alphabetical Listing of Med Terms

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J  K  L  M  N  O  P  Q
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Also check out the medical abbreviations section


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Term   arrow   Meaning

a-     arrow  no; not; without
an-   arrow   no; not; without 
ab-    arrow   away from 
abdomin/o    arrow   abdomen
-ac    arrow   pertaining to 
acanth/o     arrow   spiny; thorny 
acar/o     arrow   mites 
acetabul/o    arrow   acetabulum (hip socket) 
acous/o     arrow   hearing 
acoust/o     arrow   hearing, sound  
acr/o      arrow   extremities; top; extreme point  
acromi/o      arrow    acromion (extension of shoulder bone) 
actin/o      arrow    light
acu/o      arrow   sharp; severe; sudden 
-acusis     arrow   hearing 
ad-     arrow   toward 
-ad     arrow   toward 
aden/o     arrow   gland 
adenoid/o     arrow   adenoids 
adip/o     arrow    fat
adren/o     arrow   adrenal gland  
adrenal/o     arrow   adrenal gland  
aer/o     arrow   air 
af-     arrow   toward 
agglutin/o    arrow   clumping; sticking together  
-agogue    arrow   producer, leader  
-agon     arrow   to assemble; gather  
agora-     arrow   marketplace 
-agra     arrow   excessive pain  
-al     arrow   pertaining to 
alb/o     arrow   white 
albin/o     arrow   white 
albumin/o     arrow   albumin (protein)  
alges/o     arrow   sensitivity to pain  
-algesia     arrow    sensitivity to pain 
-algia     arrow   pain 
all/o     arrow   other 
alveol/o      arrow   alveolus; air sac; small sac  
ambi-     arrow   around, on both sides, about  
ambly/o     arrow   dim; dull 
amphi-    arrow   around, on both sides  
-amine     arrow   nitrogen compound  
ammon/o     arrow    ammonium 
amni/o    arrow   amnion (sac surrounding the embryo)  
amyl/o     arrow   starch 
an/o    arrow   anus 
-an     arrow   pertaining to 
ana-      arrow   up; apart; backward; again; anew 
andr/o     arrow   male 
aneurysm/o    arrow   aneurysm (widening of blood vessel)  
angi/o     arrow   vessel (blood)  
anis/o     arrow   unequal 
ankyl/o     arrow   stiff 
ante-     arrow   before; forward  
anter/o     arrow   front 
anthrac/o     arrow   coal 
anthr/o     arrow   antrum of the stomach  
anti-     arrow   against 
anxi/o     arrow   uneasy; anxious  
aort/o     arrow   aorta (largest artery)  
-apheresis     arrow   removal 
aphth/o     arrow    ulcer
apo-     arrow   off; away  
aponeur/o     arrow   aponeurosis (type of tendon)  
append/o     arrow   appendix 
appendic/o     arrow   appendix 
aque/o     arrow   water 
-ar     arrow   pertaining to  
arachn/o     arrow   spider 
-arche     arrow   beginning 
arsenic/o     arrow   arsenic 
arter/o     arrow   artery 
arteri/o     arrow   artery 
arteriol/o    arrow   arteriole (small artery)  
arthr/o    arrow   joint 
-arthria     arrow   articulate (speak distinctly)  
articul/o     arrow   joint 
-artresia     arrow   closure, occlusion  
atreto-     arrow   closed, lacking an opening  
-ary     arrow   pertaining to  
asbest/o     arrow   asbestos 
-ase     arrow   enzyme 
aspir/o    arrow   removal  
-assay    arrow   to examine, analyze  
-asthenia     arrow   lack of strength  
astr/o     arrow   star, star-shaped 
aque/o    arrow   water 
atel/o     arrow   incomplete 
ather/o    arrow   plaque (fatty substance)  
-ation    arrow   process; condition  
atri/o    arrow   atrium (upper heart chamber)  
atmo-     arrow   steam, vapor 
audi/o     arrow   hearing 
audit/o     arrow   hearing 
aur/o     arrow   ear 
auricul/o    arrow   ear 
auscult/o    arrow   to listen  
aut/o     arrow   self; own  
aut-     arrow   self; own  
auto-     arrow   self; own  
aux/o     arrow   growth, acceleration 
axill/o     arrow   armpit 
axi/o     arrow   axis  
azot/o     arrow   urea; nitrogen 
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Lab Values - A thru Z