ectr/o
[cd.] congenital absence
atel/o
[cd.] incomplete (formation)
per/o
[cd.] deformed, deformity
schist/o; schiz/o
[cd.] split; splitting
phim/o
[cd.] closed; closure
nev/o
[cd.] birthmark
atret/o; atres/o
[cd.] lack of a normal opening
x-atresia
[cd.] the lack of a normal opening in x
x-o-pagus
[cd.] a twinned fetus joined at x
x-o-(di)dymus
[cd.] a fetus with duplication involving x
sept(ic)/o
[pd] The presence of microorganisms
parasit/o
[pd] parasite
am(o)eb/o
[pd] ameba
verm(in)/i
[pd] parasite
cocc/o; cocc/i
[pd] coccus
bacill/o
[pd] bacillus
spirill/o
[pd] spirillum
spirochet/o
[pd] spirochete
spor/o
spore
myc(et)/o
fungus
fung/i
fungus
pedicul/o
lice; little feet
helminth/i
worm
nem(at)/o
roundworm