NIFO

Esperanto Wikipedia has an article on:

Nifo

Wikipedia ^eo

• nifo

Abbreviation of NeIdentigita Fluganta Objekto

NIFO (accusative singular NIFOn, plural NIFOj, accusative plural NIFOjn)

1. UFO (an unidentified flying object)

• NIFO has regular plural and accusative forms, though these can also be found with a hyphen inserted before the ending(s): NIFO-j, NIFO-n, NIFO-jn.