UFO is not a word.
It is a TLA (three-letter-acronym) for the three-word-phrase "Unidentified Flying Object".
Alien+rocket=UFO
UFO stands for Unidentified Flying Object
Elliptical is a word no one knows the definition to.
How about heavenly.
heavenly
UFO
A UFO is an unidentified flying object.By definition it is unidentified and therefore we don't know what they are or where they come from.If we don't know what it is or where it comes from it can't be valued.
Ufo's is not a word.
OMG! UFO is such an underrated word. It stands for "Unidentified Flying Object." An alien aircraft can be a "Mothership" or just an "Alien Aircraft."
UFO and SOS, no. ID, yes, because it is a word in addition to being an abbreviation.
UAP stands for Unidentified Aerial Phenomenon. Another word for UFO.
UFO stands for, unidentified flying object, therefore any flying object not identified or recognized could be called a UFO, though that term is usually now a days used to describe a flying saucer. The UFO crew are ETS, or E.T.s ~ extraterrestrials.
UFO more properly U.F.O. is an abbreviation. Unidentified Flying Object. if you pronounce it as a word- ( You-Foe!) it not only implies hostile intent, but is an acronym, which is pronounced as a word- such as Radar. ( radio direction and ranging) for example. There is your answer.
The dictionary definition of a word
what is the definition of word-processing package
The definition of something describes exactly what the word is and how the word can be used. You will also see synonyms for the word and if the word is a noun or adjective when viewing the definition.
Because UFO is an abbreviation, UFO's or UFOs is correct.