宙 JLPT N2 Kanji 宙 — mid-air, air, space, sky, memorization, interval of time JLPT N2 8 strokes Grade 6 Radical 宀 #1005 most frequent Readings On'yomiチュウ Example words 宇宙うちゅうuniverse; cosmos; space 宙返りちゅうがえりsomersault; looping-the-loop