Scientific studies of various fields –
X to Z
xylography-- art of engraving on wood
xylology -- study of wood
zenography-- study of the planet Jupiter
zoiatrics-- veterinary surgery
zooarchaeology-- study of animal remains of archaeological sites
zoochemistry-- chemistry of animals
zoogeography-- study of geographic distribution of animals
zoogeology -- study of fossil animal remains
zoology-- study of animals
zoonomy-- animal physiology
zoonosology-- study of animal diseases
zoopathology-- study of animal diseases
zoophysics-- physics of animal bodies
zoophysiology -- study of physiology of animals
zoophytology-- study of plant-like animals
zoosemiotics-- study of animal communication
zootaxy-- science of classifying animals
zootechnics-- science of breeding animals
zygology -- science of joining and fastening
zymology -- science of fermentation
X to Z
xylography-- art of engraving on wood
xylology -- study of wood
zenography-- study of the planet Jupiter
zoiatrics-- veterinary surgery
zooarchaeology-- study of animal remains of archaeological sites
zoochemistry-- chemistry of animals
zoogeography-- study of geographic distribution of animals
zoogeology -- study of fossil animal remains
zoology-- study of animals
zoonomy-- animal physiology
zoonosology-- study of animal diseases
zoopathology-- study of animal diseases
zoophysics-- physics of animal bodies
zoophysiology -- study of physiology of animals
zoophytology-- study of plant-like animals
zoosemiotics-- study of animal communication
zootaxy-- science of classifying animals
zootechnics-- science of breeding animals
zygology -- science of joining and fastening
zymology -- science of fermentation