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Kuhn, Thomas Samuel 1922-1996.

American philosopher and historian best known for his work The Structure of Scientific Revolutions (1962), in which he challenged the view that the history of science is a smooth and cumulative process, arguing instead that scientific change occurs through "revolutions" in which one paradigm of inquiry and explanation is replaced by another.

Kuhn

(kn), Margaret Known as "Maggie." 1905-1995.

American activist who founded the Gray Panthers (1970), an organization of senior citizens dedicated to ending age discrimination and promoting social reform.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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