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Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Trajectory is an agile planning tool that helps teams discuss and plan their projects in a realistic, structured way.

Vocabulary.com helps you learn new words, play games that improve your vocabulary, and explore language.

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

Trajectory is a branding,marketing, innovation company working across the health continuum to imagine and create new value for customers, companies, and their shareholders.

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The Physics Classroom is an online interactive tutorial of basic physics concepts. The lessons use an easy-to-understand language to present common physics principles discussed in a first-year high school physics course.

Ballistics calculations and formulas for small arms

Eric Weisstein

The Jet Propulsion Laboratory is the lead U.S. center for robotic exploration of the solar system, and conducts major programs in space-based Earth sciences and astronomy. JPL spacecraft have visited all of the planets from Mercury to Neptune.