spiroazirine
prospidium chloride
spiro-
spirocycle
spiroindoline
spherulous
spiroindole
spirofused
spiroadamantane
monosporangium
spiroketal
spirooxindole
spiropyran
germosporangium
spirocyclic
spiro-annulated
ketosphinganine
sporangiogenesis
spirolactone
spiropiperidine
sporangial
sporogonial
spirocyclization
azaspirene
polysporangium
spiclomazine
sphingosylphosphorylcholine
quaternary
exocentric
androsporangium
spicated
sporid
extrasporogonic
sporangioid
five-membered
spherulitic
antispurion
5-membered
thioformaldehyde
sporangiform
megazoosporange
zincblende
spirohydantoin
mazzite
parasyntheton
sporopolleninous
megasporangium
diazide
bisaziridine
diazene