Pub: Larousse, 1995.
Alphabetically self-indexing with a few useful lists. Each listed term is referenced to its discipline, and the entries are easy-to-use and well cross-referenced, and in the main intelligible to the educated non-scientist - though some assume a small level of specialist knowledge. As one would expect from Larousse, a thorough book and well worth a place on anybody's reference shelves.
Pub: Macmillan, 1995.
Packed with information, nicely pitched to the intelligent non-scientist, but in a schematic format - you need to know the general field of your enquiry. Nevertheless a useful, compact source of science information.