hydrogenic
hydrogen halide
hydrogenotrophic
reformer
tetracyanoquinodimethane
deutero-
carbohydride
muriatic acid
denucleation
chlorohydric acid
hydrocarbon
difluoroethylene
HOCN
thiocyanate
hydrogenlyase
biohydrogenation
hydrochloric acid
yellow prussiate of potash
hydrogenotrophy
Zyklon B
fluorohydride
paracyanogen
cyclopentanol
dodecahydroxide
potassium ferrocyanide
hydrolith
gray ammonia
cycloadduct
lettsomite
hydrogenolytic
hydrocyanation
cymidine
hydrofluoric
dideoxyribonucleoside
cyanogenesis
hydridic
hydroferrocyanic
cystidial
cyanize
electrohydrogenesis
superhydride
hydrolysate
procyanidolic
dimethyl acetylenedicarboxylate
rotten egg gas
hydrogen disulfide
hydrosulfuric acid
swamp gas