Look up dictionary definitions from biology, chemistry, physics, electronics, computer science, or mechanical design from your Mac OS X desktop. Contains more than 120,000 entries. The companion speller will make your word processing program a sci and tech spelling expert. Available for Mac OS X in both individual and multi-user versions. Also available for Microsoft Windows. Ideal for students, writers, educators, and word processing professionals. Discounts are available for network licensees, and resellers.