The dictionary contains approx. 40,000 entries covering all fields of biology, from cytology and molecular biology to genetics and behavior, with special reference to zoology. Attention is focused on applied fields too, such as pathology, veterinary science, biological aspects of medicine, phytopathology, agriculture, forestry, biotechnology, nature conservation, etc., as well as descriptive terms commonly used in biological literature. The dictionary will be useful to translators and scientists dealing with various fields of fundamental and applied biology.