re-, red-
again
replication
ren-
kidney
renal
retro-
backward
retrograde
sacchar-
sugar
saccharolytic
sapro-
decay
saprotroph
scop-, -scopy
see, to look
radioscopy
-scription
record
description
semi-
half
semicircle
soma-, -some
body
somatic cell
sperm-, -sperm
seed, germ
spermatophore
spir-, -spire
breath
spiracles
spor-, -spore
seed
spore
sta-, stat-, -stasis
placed, staying
hemostasis
stom-, -stom-
opening
stomata
sub-
below, under
subcellular
super-, supra-
over, above
suprarenal
syn-, sym-, sys-
together
symporter