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Leeuwenhoek

or Le·u·wen·hoek

[ley-vuh n-hoo k; Dutch ley-y-wuh n-hook]
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noun
  1. An·ton van [ahn-tawn vahn] /ˈɑn tɔn vɑn/, 1632–1723, Dutch naturalist and microscopist.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for leeuwenhoek

Historical Examples

  • As has been stated, Leeuwenhoek considered bacteria to be animalcules because they showed independent movement.

    The Fundamentals of Bacteriology

    Charles Bradfield Morrey

  • But little attention was paid to the natural history of these animalcules for nearly a hundred years after Leeuwenhoek.

    The Fundamentals of Bacteriology

    Charles Bradfield Morrey

  • In common with wheat and barley it also suffers from Leeuwenhoek's wolf and the weevil.

  • Leeuwenhoek's wolf (Tinea granella) might visit us, in a similar conveyance, from Holland or France.

  • Leeuwenhoek mentions the case of a woman whose leg had been enlarging with glandular bodies for some years.


British Dictionary definitions for leeuwenhoek

Leeuwenhoek

noun
  1. Anton van (ˈɑntɔn vɑn). 1632–1723, Dutch microscopist, whose microscopes enabled him to give the first accurate description of blood corpuscles, spermatozoa, and microbes
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

leeuwenhoek in Medicine

Leeuwenhoek

Anton van 1632-1723
  1. Dutch naturalist and microscopy pioneer. His careful observations resulted in accurate descriptions of bacteria, spermatozoa, and red blood cells.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

leeuwenhoek in Science

Leeuwenhoek

[lāvən-huk′]
  1. Dutch naturalist and pioneer of microscopic research. He was the first to describe protozoa, bacteria, and spermatozoa. He also made observations of yeasts, red blood cells, and blood capillaries, and traced the life histories of various animals, including the flea, ant, and weevil.
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Biography: As a young man Anton van Leeuwenhoek worked in a drapery store, where he used magnifying glasses to count thread densities. Perhaps inspired by Robert Hooke's Micrographia (an account of Hooke's microscopic investigations in botany, chemistry, and other branches of science, published in 1665), he began building microscopes. He examined hair, blood, insects, and other things around him, keeping detailed records and drawings of his observations. Although compound microscopes with more than one lens had been invented at the end of the fourteenth century, they were able to magnify objects only 20 to 30 times. Van Leeuwenhoek's single-lens microscopes were basically powerful magnifying glasses, but his superior lens-grinding skills and acute eyesight enabled him to magnify objects up to 200 times. Van Leeuwenhoek made each microscope for a specific investigation, and he had his specimens permanently mounted so he could study them as long as he wanted. His discoveries include protozoans (1674), blood cells (1674), bacteria (1676), spermatozoa (1677), and the structure of nerves (1717). By the time of his death at the age of ninety, van Leeuwenhoek had constructed more than 400 microscopes.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.