| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
| Otto, Nikolaus August |
(n ´k lous ou´g st ô´t) (KEY) , 1832–91, German engineer. He was coinventor (1867) of an internal-combustion engine, and he devised (1876) the four-stroke Otto cycle, which was widely adopted for automobile, airplane, and other motors. |
| The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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