One of the mysteries of the English language finally explained.
Used attributive and in the genitive with reference to an oil-gas obtained from shale oil or similar fractions of petroleum which was formerly widely used for lighting railway carriages, lighthouses, buoys, etc.
Late 19th century; earliest use found in Appletons' Journal. From the name of Julius PintschAG, a German firm founded by Carl Friedrich Julius Pintsch and continued by his sons Oskar Ernst Julius Pintsch and Richard Pintsch, which developed this process and produced these devices.
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