| EPIDEMIOLOGIST | Person who studies the incidence and distribution of disease (14) |
| EPIDEMIOLOGY | Study of the incidence and distribution of diseases |
| SNELLSLAW | Formula relating to the angles of incidence and refraction, used in the field of optics (6,3) |
| FLUORIDE | Anion added to water supplies to reduce the incidence of tooth decay in the population (8) |
| NITRATE | Chemical affecting the incidence of lice? (7) |
| EE | The branch of engineering science that studies the uses of electricity and the equipment for power generation and distribution and the control of machines and communication |
| ASTROLOGER | Person who studies the motions and relative positions of the planets, sun and moon, interpreted in terms of human activity (10) |
| TYPOGRAPHER | A person who studies the natural features of the surface of the Earth (11) |
| INDOLOGIST | A person who studies the history and culture of the country with the capital New Delhi (10) |
| HYDROLOGIST | Person who studies the distribution, conservation, use etc of the Earth's water (11) |
| OCTOLOGIST | A person who studies the metaphysical nature and essence of being (10) |
| ETYMOLOGIST | Person who studies the history of words and linguistic change |
| BOTANIST | Person who studies the classification, structure, physiology and ecology of plants (8) |
| SOCIOLOGIST | Person who studies the structure and workings of communities (11) |
| VEXILLOLOGIST | A person who studies the history and usage of flags (13) |
| ECONOMIST | What is a person who studies the production and consumption of wealth? (9) |
| ECONOMICS | Science of the production and distribution of wealth (9) |
| SUPPLY | ... chain, the sequence of production and distribution of a commodity |
| ZOOLOGIST | Person who studies the science of animals (9) |
| HISTORIOGRAPHER | Person who studies the writing of past events (15) |
