(I have copied the following text from the book's back page)
If you are curious about words you can use this book to find out exactly what ARTIODACTYL means, what an ECTOLOPH is and where you can find CANTIUM. Within this book are over 12,800 entries, plus directions for using the roots, rules of pronunciation, guidance for constructing scientific names and general principles for changing Greek letters into their English equivalents.
Additionally there are appendices listing adjectival forms of geographical names, some common terms for animals, plants and structures, activities and habitats, shapes, sizes, colors, textures, patterns, numbers, quantity, direction and location, parts of the year and chemical elements.