[koch for 1; kawkh for 2]
- Edward I.,1924–2013, U.S. politician: mayor of New York City 1977–89.
- Ro·bert [roh-bert] /ˈroʊ bɛrt/, 1843–1910, German bacteriologist and physician: Nobel Prize 1905.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for koch
No matter how much money the Koch brothers or Tom Steyer spend, they cannot convince a lottery to choose one person over another.Is It Time to Take a Chance on Random Representatives?
November 8, 2014
If Republicans win big, Democrats will hang their heads and cuss the Koch brothers.Relax—Both Parties Are Going Extinct
November 4, 2014
Like the Koch Brothers, it seemed Rastetter wanted to be a GOP kingmaker.Will Chris Christie Bow to Iowa’s Pork Kings?
November 1, 2014
But the school has other attributes that may have appealed to the Koch group.At This Creepy Libertarian Charter School, Kids Must Swear ‘to Be Obedient to Those in Authority’
October 15, 2014
At the January Koch conference in the Palm Springs area, Abboud led a discussion that drew many wealthy donors, say two attendees.Casino Tycoon Sheldon Adelson Takes $100 Million Gamble on GOP Senate
September 3, 2014
When Vienna refused its assent, Koch resigned his commission.The Birth of Yugoslavia, Volume 2
Koch gives an explanation, but leaves it to the future to be confirmed.
He and Mr. Koch went to the top of the mountain of Poè near Lundu.Sketches of Our Life at Sarawak
It was just as they pitched on those fellows, Koch and Pestryakov, at first.Crime and Punishment
Then, in 1881, came the welcome news that Koch had discovered the bacillus of tubercle.Experiments on Animals
- Robert (ˈroːbɛrt). 1843–1910, German bacteriologist, who isolated the anthrax bacillus (1876), the tubercle bacillus (1882), and the cholera bacillus (1883): Nobel prize for physiology or medicine 1905
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
Koch(kôk, kôKH)Robert 1843-1910
- German bacteriologist who discovered the cholera bacillus and the bacterial cause of anthrax. He won a 1905 Nobel Prize for developing tuberculin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- German bacteriologist who demonstrated that specific diseases are caused by specific microorganisms. He identified the bacilli that cause anthrax, tuberculosis, and cholera, and he showed that fleas and rats are responsible for transmission of the bubonic plague and that the tsetse fly is responsible for transmitting sleeping sickness. Koch won the Nobel Prize for physiology or medicine in 1905.
Biography: Robert Koch is deservedly famous for his discovery of the bacteria that cause tuberculosis and many other diseases, and his illumination of the life cycle of the anthrax bacillus in 1876 showed how a particular microorganism caused a particular disease, definitively establishing the modern germ theory of disease. What Koch is less well-known for is his equally important and pioneering work in laboratory methods, especially in culture techniques and microscopy. Some attempts before Koch had already been made to grow microorganisms outside the body, but it was he who, through ingenious experiments, devised cheap, reliable, and duplicable techniques for growing pure cultures of single species of bacteria in the lab. Except for the lid, he invented the petri dish and a jellylike culture medium for it (the lid was later added by one of his assistants, Julius Petri). For years a passionate amateur photographer, Koch soon applied that interest to his lab work: he devised methods for preparing and culturing bacteria in thin layers on glass slides so that they could be photographed under a microscope. He invented ways of staining bacterial cultures to make poorly visible bacteria stand out under magnification. All of these innovations allowed the life cycles of bacteria to be studied and documented for the first time-an advance that bore its first and perhaps most dramatic fruit in Koch's demonstration of the life cycle of the anthrax bacillus, which was accompanied by dramatic photographs that took the scientific world by storm.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.