Tamil Subject Dictionary - Branches of Science (Pages: 21)

Orthoepy	Orthography
Orthopterology	Oryctology
Osmics	Osmology
Osphresiology	Osteology
Otology	Otorhinolaryngology
Paedology	Paedotrophy
Paidonosology	Palaeoanthropology
Palaeobiology	Palaeoclimatology
Palaeolimnology	Palaeontology
Palaeopedology	Paleo-osteology
Paleobotany	Palynology
Papyrology	Parapsychology
Parasitology	Paroemiology
Parthenology	Pataphysics
Pathology	Patrology