This up-to-date dictionary is a reference for both students and non-scientists. It provides: comprehensive coverage of biology (including human biology), chemistry, physics, the earth sciences, and astronomy; 8500 clear and concise entries; commonly encountered terms from mathematics and computing; and up-to-date coverage of areas such as molecular biology, genetics, particle physics, cosmology and fullerene chemistry. Appendices include the periodic table, tables of SI units, and the classifications of the plant and animal kingdoms.