Forming Plurals with Medical Terminology

English words

add s or es for plural
vein = veins

Greek & Latin words ending in a

add an e for plural
stria (a discolored stripe on the skin) = striae

Greek & Latin words ending in um

replace the um with an a
diverticulum (a pouch or sac that has developed within the gut or
bladder) = diverticula

Greek & Latin words ending in nx

replace the nx with nges
Larynx (voicebox) = larynges

ex
ix

ices
apex = apices
appendix - appendices

ium

ia
bacterium = bacteria

y

ies
cardiopathy = cardiopathies

a

ata
condyloma = condylomata

is

es
diagnosis = diagnoses

us

i
fungus = fungi

on

a
phenomenon - phenomena

ax

aces
thorax = thoraces

a

ae
vertebra = vertebrae