See Also: Dix, Otto(encyclopedia)
Otto(dictionary)
Otto I(encyclopedia)
Otto III(encyclopedia)
Otto IV(encyclopedia)
Otto(medicine)
Voges, Otto(medicine)
Warburg, Otto(medicine)
Werner, Otto(medicine)
otto of rose(medicine)

Otto (iou)



Otto noun1. L19.
[N. A. Otto (1832-91), German engineer.]
Used attrib. to designate (an engine using) the four-stroke cycle employed in most petrol and gas engines.