動どう物ぶつ園えん仮か説せつMeaningsNoun1. zoo hypothesis (theory on why humanity has had no contact with extraterrestrial life)Kanji used動move物thing園park仮temporary説theoryComposed of動どう物ぶつ園えんzoo; zoological gardensNoun仮か説せつhypothesis; supposition; assumption; tentative theoryNoun