Flying Saucers
Popular term for Unidentified Flying Objects or UFOs. The
terms flying saucer and UFO were used somewhat synonymously
in the 1950s, but the former term was eventually adopted
by those who claimed to have positive evidence that what
others called UFOs were in fact extraterrestrial crafts. The term
originated from a report by Kenneth Arnold, whose 1947 sightings
of UFOs near Mt. Rainier in Washington began the modern
UFO era.
Clark, Jerome. The Emergence of a Phenomenon UFOs from the
Beginning through 1959. Vol. 2 of The UFO Encyclopedia. Detroit
Omnigraphics, 1992.