Acoustics
- The study of sound (or the science of sound).
Aerodynamics
- (i)The branch of mechanics that deals with the motion of air and other gases.
- (ii) The study of the motion and control of solid bodies like aircraft, missiles, etc., in air.
Aeronautics
- The Science or art of flight or airplanes.
Aeronomy
- The study of the Earth’s upper atmosphere, including its composition, density, temperature, and chemical reactions, as recorded by sounding rockets and Earth satellites.
Aerostatics
- The branch of statics deals with gases in equilibrium and the gases and bodies in them.
Aetiology
- The science of causation.
Agrobiology
- The science of plant life and plant nutrition.
Agronomy
- The science of soil management and the production of field crops.
Agrostology
- The study of grasses.
Alchemy
- Chemistry in ancient times.
Anatomy
- The science dealing with the structure of animals, plants or the human body.
Angiology
- Deals with the study of the blood vascular system.
Anthology
- Study of flowers.
Anthropology
- The science that deals with the origin as well as the physical and cultural developments of mankind.
Apiculture
- Honey industries (beekeeping).
Araneology
- Study of spiders.
Arboriculture
- Cultivation of trees and vegetables.
Archaeology
- The study of antiquities.
Astrochemistry
- The study of interstellar matter to know the origin of the Universe.
Astrology
- The ancient art (now mostly termed a pseudo-science) of predicting the course of human destinies with the help of indications deduced from the position and movement of the heavenly bodies.
Astronautics
- The science invoked in space travel.
Astronomy
- The study of the heavenly bodies.
Astrophysics
- The branch of astronomy concerned with the physical nature of heavenly bodies.
Autoecology
- The study of the ecology of species.
Bacteriology
The study of bacteria.
Biochemistry
- The study of chemical processes of living things.
Bioclimatology
- The study of the effects of climate on living organisms.
Bioinformatics
- The creation and maintenance of the databases of biological information by the usage of advanced computing systems.
Biology
- The study of living things, of both flora and fauna.
Biomechanics
- The study of the mechanical laws relating to the movement or structure of living organisms.
Biometeorology
- The study of the effects of atmospheric conditions on living organisms.
Biometry
- The application of mathematics to the study of living things.
Bionics
- The study of functions, characteristics, and phenomena observed in the living world and the application of this knowledge to the world of machines.
Bionomics
- The study of the relation of an organism to its environment.
Biophysics
- The physics of vital processes (living things).
Biotechnology
- The use of living organisms or other biological systems in the manufacture of drugs or other products or for environmental management.
Botany
The study of plants.
Cardiology
- Study of heart.
Craniology
- Study of skulls.
Ceramics
- The art and technology of making objects from clay, etc. (pottery').
Chemistry
- The study of elements and their laws of combination and behavior.
Chemotherapy
- The treatment of disease by using chemical substances.
Chronobiology
- The study of the duration of life.
Chronology
- The science of arranging time in periods and ascertaining the dates and historical order of past events.
Climatotherapy
- The treatment of disease through a suitable climatic environment, often, but not always, found in recognized health resorts. As climate is subject to seasonal variations, the required environment may have to be sought in different localities at different periods of the year.
Conchology
- The branch of zoology dealing with the shells of molluscs.
Cosmogony
- The science of the nature of heavenly bodies.
Cosmography
- The science that describes and maps the main features of the Universe.
Cosmology
- The science of the nature, origin, and history of the Universe.
Cryobiology
- The science that deals with the study of organisms, especially warm-blooded animals, at low temperatures. The principal effect of cold on living tissues is the destruction of life or preservation of it at a reduced level of activity.
Cryogenics
- The science dealing with the production, control, and J application of very low temperatures.
Cryotherapy
- Use of cold, but not freezing cold, as a form of treatment. Hypothermia may be deliberately induced during surgery, for instance, to decrease a patient’s oxygen requirement.
Cryptography
- The study of ciphers or codes (secret writings).
Crystallography
- The study of, the structure, forms, and properties of crystals.
Cytochemistry
- The branch of cytology’ dealing with the chemistry of cells.
Cytogenetics
- The branch of biology deals with the study of heredity from the point of view of cytology and genetics.
Cytology
- The study of cells, especially their formation, structure, and functions.
Dactylography
- The study of fingerprints for the purpose of identification.
Dermatology
- The study of skin and skin diseases.
Ecology
- The study of the relation of animals and plants to their surroundings, animate and inanimate.
Electronics
- The study of the development, behavior, and applications of electronic devices and circuits.
Electrostatics
- The study of static electricity.
Embryology
- The study of the development of embryos.
Entomology
- The study of insects.
Ethnography
- A branch of anthropology dealing with the scientific description of individual cultures.
Ethnology
- A branch of anthropology that deals with the origin, distribution, and distinguishing characteristics of the races of mankind.
Ethology
- The study of animal behavior.
Eugenics
- The study of the production of better offspring by the careful selection of parents.
Evolution
- Deals with the study of the origin of new from old.
Exobiology
- Deals with life or possibilities of life beyond the earth.
Fractography
- The study of fractures in metal surfaces.
Floriculture
- Study of flower-yielding plants.
Genealogy
- The study of family 'Origins, and history. It includes the compilation of lists of ancestors and’ arranging them in pedigree charts.
Genecology
- The study of genetic composition of plant populations about their habitats.
Genesiology
- The science of generation.
Genetics
- The branch of biology deals with the phenomena of heredity and the laws governing it.
Geobiology
- The biology of terrestrial life.
Geobotany
- The branch of botany dealing with all aspects of relations between plants and the earth’s surface.
Geochemistry
- The study of the chemical composition of the earth’s crust and the changes which take place within it.
Geodesy
- Methods of surveying the earth for making maps and correlating geological, gravitational, and magnetic measurements. It is a branch of geophysics.
Geography
- The science that deals with the earth’s surface, physical features, climate, population, etc.
Geology
- The science that deals with the physical history of the earth.
Geomedicine
- The branch of medicine dealing with the influence of climate and environmental conditions on health.
Geomorphology
- The study of the characteristics, origin, and development of landforms.
Geophysics
- The physics of the earth.
Gerontology
- The study of old age, its phenomena, diseases, etc.
Glaciology
- The study of ice and the action of ice in all its forms.
Gynaecology
- Study of female reproductive organs.
Haematology
- Study of blood.
Hepatology
- Study of liver.
Histology
- The study of tissues.
Horticulture
- Study of garden cultivation.
Hydrodynamics
- The mathematical study of the forces, energy, and pressure of liquid in motion.
Hydrography
- The science of water measurements of the earth with special reference to their use for navigation.
Hydrology
- The study of water concerning its occurrence and properties in the hydrosphere and atmosphere.
Hydrometallurgy
- The study of the occurrence, movement, and changes in the state of water in the atmosphere.
Hydropathy
- The treatment of disease by the internal and external use of water.
Hydroponics
- The cultivation of plants by placing the roots in liquid nutrient solutions rather than in soil.
Hydrostatics
- The mathematical study of forces and pressures in liquids.
Hygiene
- The science of health and its preservation.
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.
Limnology
- The study of lakes.
Lithology
- A systematic study of rocks.
Mammography
- Radiography of the mammary glands.
Metallography
- The study of the crystalline structures of metals and alloys.
Metallurgy
- The process of extracting metals from their ores.
Meteorology
- The science of the atmosphere and its phenomena.
Metrology
- The scientific study of weights and measures.
Microbiology
- The study of minute living 'organisms, including bacteria, moulds-and pathogenic protozoa.
Molecular biology
- The study of the structure of the molecules which are of importance in biology.
Morphology
- The science of organic forms and structures.
Myology
- Study of muscles.
Mycology
- The study of fungi and fungus diseases.
Nanotechnology
- The technology that is based on the scale of nanometres (109m).
Neurology
- The study of the nervous system, its functions, and disorders.
Nephrology
- Study of kidneys.
Neuropathology
- The study of diseases of the nervous system.
Nosology
- The branch of medicine that deals with the classification of diseases.
Numerology
- The study of numbers. The study of the date and year of one’s birth and their influence on one’s future life.
Numismatics
- Study of coins and medals.
Odontology
- The scientific study of the teeth.
Optics
- The study of nature and properties of light.
Ornithology
- The study of birds.
Orthopaedics
- The branch of surgery that deals with the deformities and diseases of bones and joints.
Obstetrics
- Branch of medicine dealing with pregnancy.
Oneirology
- Study of dreams.
Ophthalmology
- Study of eyes.
Ornithology
- Study of birds.
Osteology
- Study of bones.
Osteopathy
- A therapeutic system based on detecting and correcting faulty structures in bones and muscles.
Otology
- The study of the ear and its diseases.
Otorhinolaryngology
- The study of diseases of the ear, nose, and throat.
Paleobotany
- The study of fossil plants.
Paleontology
- The study of fossils.
Pathology
- Branch of medicine that studies the causes and nature of diseases, especially the structural and functional changes brought about by diseases.
Pharyngology
- The science of the pharynx (the cavity at the back of the mouth where the passages to the nose, lungs, and stomach begin) and its diseases.
Phenology
- The study of periodicity phenomena of plants.
Philology
- The study of written records, their authenticity, etc.
Phonetics
- The study of speech sounds and their production, transmission, reception, etc.
Photobiology
- The branch of biology dealing with the effect of light on organisms.
Phrenology
- The study of the faculties and qualities of minds from the shape of the skull.
Phthisiology
-The scientific study of tuberculosis.
Phycology
- The study of algae.
Physical Science
- The study of natural laws and processes other than those peculiar to living matters, as in physics, chemistry, and astronomy.
Physics
- The study of the properties of matter.
Physiography
- The science of physical geography.
Physiology
- The study of the functioning of the various organs of living beings.
Phytogeny
- The science dealing with the origin and growth of plants.
Planetology
- The study of the planets of the Solar System.
Pomology
- The science that deals with fruits and fruit growing.
Psychology
- The study of human and animal behavior.
Philately
- Stamp collecting.
Pedology
- Study of soils.
Pisciculture
- Study of fish.
Radio Astronomy
- The study of heavenly bodies by the reception and analysis of the radio frequency electromagnetic radiations which they emit or reflect.
Radiobiology
- The branch of biology which deals with the effects of radiation on living organisms.
Radiology
- The study of X-rays and radioactivity.
Rheology
- The study of the deformation and flow of matter.
Seismology
- Study of earthquakes.
Selenology
- The scientific study of the moon, its nature, origin, movement, etc
Sericulture
- Silk industry(culture of silk moth and pupa).
Sociology
- The study of human society.
Spectroscopy
- The study of matter and energy by the use of a spectroscope.
Statistics
- The collection and analysis of numerical data.
Herpetology
- Study of snakes.
Taxonomy
- Study of classification of organisms.
Tectonics
- The study of structural features of the earth’s crust.
Teleology
- The study of the evidence of design or purpose in nature.
Telepathy
- Communication between two minds at a distance with the help of emotions, thoughts, and feelings.
Therapeutics
- The science and art of healing.
Topography
- A special description of a part or region.
Toxicology
- The study of poisons.
Virology
- Study of virus.
Zoogeography
- The study of the geological distributions of animals.
Zoology
- The study of animal life.