No, that was due to Kenneth Arnold and the first modern UFO sighting in 1947
He saw nine objects moving over Mount Rainer in Washington as he was
flying his airplane. While the objects he saw looked like flying wings,
Arnold said they flew like they were saucers skipping across water, and
the media immediately started calling them "flying suacers".
http://en.wikipedia.org/wiki/Kenneth_Arnold
There were ancient reports of strange flying objects that were said to
look like burning shields or disks, but 1947 is where the term and the idea
of saucer began.
http://science.howstuffworks.com/ufo-history.htm