This updated science dictionary offers readers a handy reference for everything from quarks to protoplasm, featuring more than 8,500 entries, 350 photographs and drawings, 320 biographical profiles, and coverage of the revised table of the elements and new scientific innovations through 2011.

"New, updated edition"--Jkt. Rev. ed. of: The American heritage science dictionary. Boston : Houghton Mifflin Harcourt, c2008.