Word Study
ufo
WORDNET DICTIONARY
Noun ufo has 1 sense
- ufo(n = noun.cognition) flying saucer, unidentified flying object - an (apparently) flying object whose nature is unknown; especially those considered to have extraterrestrial origins; Array is a kind of apparition, fantasm, phantasm, phantasma, phantom, shadow
OXFORD DICTIONARY
ufo, n. (also ufo) (pl. UFOs or ufos) unidentified flying object.
Etymology
abbr.
For further exploring for "ufo" in Webster Dictionary Online
