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Gil·bert (gĭlbərt), Cass 1859-1934.
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American architect whose design of the 60-story Woolworth Building in New York City (1913) greatly influenced the development of the skyscraper.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
gil·bert (gĭlbərt)
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n.
The centimeter-gram-second electromagnetic unit of magnetomotive force, equal to 10/4 π ampere-turn.

[After William Gilbert.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Gilbert, Sir William Schwenck 1836-1911.
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British playwright and lyricist known for a series of comic operas, including H.M.S. Pinafore (1878) and The Pirates of Penzance (1879), written with composer Sir Arthur Sullivan.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Gilbert, William 1544-1603.
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English physician to Queen Elizabeth I who is noted for his studies of electricity and magnetism.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Gilbert, Walter Born 1932.
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American molecular biologist. He shared a 1980 Nobel Prize for his work in sequencing DNA molecules.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
Gilbert, Sir Humphrey 1539?-1583.
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English navigator who urged exploration for the Northwest Passage, established in Newfoundland (1583) the first English colony in North America, and was lost at sea during a homeward voyage.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 

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.