Branches of Science and Their Definitions
| Branch | Concerning Field |
| Aerodynamics | The study of the motion of gas on objects and the forces created |
| Aeronautics | Science of flight of air-planes. |
| Agronomy | Science dealing with crop plant. |
| Anatomy | The study of the structure and organization of living things |
| Angiology | Deals with the study of blood vascular system. |
| Anthology | Study of flower. |
| Anthropology | The study of human cultures both past and present. Study of apes and man. |
| Apiculture | Honey industries (Bee Keeping). |
| Araneology | Study of spiders. |
| Archaeology | The study of the material remains of cultures |
| Astronomy | The study of celestial objects in the universe. Study of heavenly bodies. |
| Astrophysics | The study of the physics of the universe |
| Bacteriology | The study of bacteria in relation to disease |
| Batrachology | Study of frogs. |
| Biochemistry | The study of the organic chemistry of compounds and processes occurring in organisms |
| Biology | The science that studies living organisms |
| Biophysics | The application of theories and methods of the physical sciences to questions of biology |
| Biotechnology | Deals with the use of micro-organisms in commercial processes for producing fine chemicals such as drugs; vaccines; hormones, etc. on a large scale. |
| Botany | The scientific study of plant life |
| Cardiology | Study of heart. |
| Chemical Engineering | The application of science, mathematics, and economics to the process of converting raw materials or chemicals into more useful or valuable forms |
| Chemistry | The science of matter and its interactions with energy and itself |
| Climatology | The study of climates and investigations of its phenomena and causes |
| Computer Science | The systematic study of computing systems and computation |
| Craniology | Study of skulls. |
| Cryogenics | Study concerning with the application and uses of very low temperature. |
| Cryptography | Study of secret writing. |
| Cytology | Study of cells. |
| Dermatology | Study of skin. |
| Ecology | The study of how organisms interact with each other and their environment |
| Electronics | Science and technology of electronic phenomena |
| Engineering | The practical application of science to commerce or industry |
| Entomology | The study of insects |
| Environmental Science | The science of the interactions between the physical, chemical, and biological components of the environment |
| Etiology | Study of cause of insects. |
| Eugenics | Study of improvement of human race by applying laws of heredity. it is related with future generations. |
| Evolution | Deals with the study of origin of new from old. |
| Exobiology | Deals with life or possibilities of life beyond the earth. |
| Floriculture | Study of flower yielding plants. |
| Forestry | The science of studying and managing forests and plantations, and related natural resources |
| Genetics | The science of genes, heredity, and the variation of organisms |
| Geology | The Study of science of the earth, its structure, and history |
| Gerontology | study of growing old. |
| Gynaecology | Study of female reproductive organs. |
| Haematology | Study of blood. |
| Hepatology | Study of liver. |
| Horticulture | Study of garden cultivation. |
| Iconography | Teachings by pictures and models. |
| Immunology | Science which deals with the study of resistance of organisms against infection. |
| Jurisprudence | Science of law. |
| Kalology | Study of human beauty. |
| Lexicography | Compiling of dictionary. |
| Marine Biology | The study of animal and plant life within salt water ecosystems |
| Mathematics | A science dealing with the logic of quantity and shape and arrangement |
| Medicine | The science concerned with maintaining health and restoring it by treating disease |
| Meteorology | Study of the atmosphere that focuses on weather processes and forecasting |
| Microbiology | The study of micro organisms, including viruses, prokaryotes and simple eukaryotes |
| Mineralogy | The study of the chemistry, crystal structure, and physical (including optical) properties of minerals |
| Molecular Biology | The study of biology at a molecular level |
| Mycology | Study of fungi. |
| Myology | Study of muscles. |
| Nephrology | Study of kidneys. |
| Neurology | The branch of medicine dealing with the nervous system and its disorders |
| Nuclear Physics | The branch of physics concerned with the nucleus of the atom |
| Numismatics | Study of coins and medals. |
| Obstetrics | Branch of medicine dealing with pregnancy. |
| Oceanography | Study of the earth’s oceans and their interlinked ecosystems and chemical and physical processes |
| Omithology | Study of birds. |
| Oneirology | Study of dreams. |
| Ophthalmology | Study of eyes . |
| Organic Chemistry | The branch of chemistry dedicated to the study of the structures, synthesis, and reactions of carbon-containing compounds |
| Ornithology | The study of birds |
| Osteology | Scientific study of bones, practiced by osteologists |
| Paleontology | The study of life-forms existing in former geological time periods |
| Pathology | Study of disease causing organisms. |
| Pedology | Study of soils. |
| Petrology | The geological and chemical study of rocks |
| Philately | Stamp collecting. |
| Philology | Study of languages. |
| Phonetics | Concerning the sounds of a language. |
| Phycology | Study of algae. |
| Physics | The study of the behaviour and properties of matter |
| Physiography | Natural phenomenon. |
| Physiology | The study of the mechanical, physical, and biochemical functions of living organisms |
| Pisciculture | Study of fish. |
| Pomology | Study of fruits. |
| Psychology | Study of the mind and behaviour |
| Radiology | The branch of medicine dealing with the applications of radiant energy, including x-rays and radioisotopes |
| Seismology | The study of earthquakes and the movement of waves through the earth |
| Sericulture | Silk industry(culture of silk moth and pupa). |
| Serpentology | Study of snakes. |
| Taxonomy | The science of classification of animals and plants |
| Telepathy | Communication between two minds at a distance with the help of emotions, thoughts and feelings. |
| Thermodynamics | The physics of energy, heat, work, entropy and the spontaneity of processes |
| Toxicology | The study of poisons and the effects of poisoning |
| Virology | Study of virus. |
| Zoology | The study of animals |
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