Publisher Description

Entries with definitions of basic scientific terms are accompanied by illustrations, "Did You Know" sidebars, and explanatory notes.

Entries with definitions of basic scientific terms are accompanied by illustrations, "Did You Know" sidebars, and explanatory notes.

A brand-new, fully revised edition of this outstanding resource for students in grades 6-10 includes hundreds of new words, abundant example sentences, lively feature notes and an all-new full-color art program.

Contains over seventy thousand entries including 1,000 new words and their meanings.

This book contains more than 16,000 authoritative, up-to-date entries in all fields from astronomy to zoology.

For the first time, the editors of the acclaimed American Heritage(R) Dictionary have applied their efforts to word usage as its own subject. The result is this practical guide that includes chapters on grammar, style, diction, gender, social groups, pronunciation, word formation, science terms, and a subject and a word index.

This newly updated, award-winning dictionary gives children confidence as they learn to read. More than 2,000 entry words are clearly defined, and 850 full-color photographs and drawings enhance the text for today's visually sophisticated young readers.

A new science dictionary offering readers a reference to everything from quarks to protoplasm features 8,500 entries, 350 photographs and drawings, cross-references linking related entries, tables and charts, and biographical information.

More than two thousand entries, in subjects from astronomy to zoology, are accompanied by tables and charts, as well as biographies of eighty-five scientists.