The story
From acronym of QB1 + -o. Derived from QB1 ("cue bee one"), short for (15760) 1992 QB1, the first such object discovered
Etymology from Wiktionary, CC BY-SA 4.0.
cubewano
Today it means: Any Kuiper belt object whose orbit is not determined by resonance with Neptune (orbit ~ 40-50 AU). Full definition →