Word Parts and Structural Terms
Combining Forms
atri/o: atrium
cardi/o: heart
cusp/i: point
ech/o: sound
electr/o: electricity
symptomat/o: symptom
valv/o: valve
valvul/o: valve
vascul/o: vessel
ventricul/o: ventricle
Prefixes
a-: absence of, without
bi-: two
brady-: slow
endo-: within, in
epi-: on, upon, over
hyper-: above, excessive
hypo-: below, deficient
inter-: between
pan-: all, total
peri-: surrounding, around
tachy-: fast, rapid
tri-: three
Suffixes
–ac: pertaining to (adjective)
–apheresis: removal (noun)
–ar: pertaining to (adjective)
–centesis: surgical puncture to aspirate fluid (noun)
–ectomy: excision, surgical removal (noun)
–genic: producing, originating, causing (adjective)
–gram: record, radiographic image (noun)
–graph: instrument used to record (noun)
–graphy: process of recording, radiographic imaging (noun)
–ia: condition of, diseased state, abnormal state (noun)
–ic: pertaining to (adjective)
–itis: inflammation (noun)
–lysis: loosening, dissolution, separating (noun)
–megaly: enlarged, enlargement (noun)
–logist: specialist, physician who studies and treats (noun)
–oma: tumor (noun)
–osis: abnormal condition (noun)
–tomy: cut into, incision (noun)
–ous: pertaining to (adjective)
–pathy: disease (noun)
–penia: abnormal reduction in number (noun)
–pexy: surgical fixation, suspension (noun)
–plasty: surgical repair (noun)
–poiesis: formation (noun)
–sclerosis: hardening (noun)
–scope: instrument used to view (noun)
-scopy: process of viewing (noun)
–stasis: stop, stopping, controlling (noun)
–stenosis: narrowing, constriction (noun)
Structural Terms Built from Word Parts
atrial: pertaining to one or both atria
atrioventricular: pertaining to the atrium and ventricle
bicuspid: having two pointed folds/flaps
cardiac: pertaining to the heart
cardiogenic: originating in the heart
cardiovascular: pertaining to the heart and vessels
endocardial: pertaining to the endocardium
interatrial: pertaining to between the atria
interventricular: pertaining to between the ventricles
myocardial: pertaining to the myocardium
pericardial: pertaining to the pericardium
tricuspid: having three pointed folds/flaps
ventricular: pertaining to one or both ventricles