How to Write 宙 (zhòu) — Meaning “Universe / Infinite time”

Picture a roof (宀) over the word 由, which sounds like "why" in English. Imagine standing under that roof, looking up at the stars and asking "why" about the vast universe — this helps link the shape to its meaning.

Start with the roof 宀: write the dot, then the left and right strokes so it is wide and flat. Then write 由 below, keeping its vertical stroke centered under the roof. A common mistake is making the roof too narrow, which makes the character unbalanced.

宙 contains 由 and means universe or infinite time; 宅 (zhái) contains 乇 and means residence; 宇 (yǔ) contains 于 and means space or eaves. Visually, 宙 has a distinct 由 inside, while 宇 has a 于 and 宅 has a 乇. In usage, 宙 appears only in words about cosmos, whereas 宅 and 宇 appear in everyday words like "house" or "space".

宙 is not used alone; it appears in the word 宇宙 (yǔ zhòu, universe), which is common in science, philosophy, and daily conversation. Other common words include 宇宙飞船 (spaceship) and 宇宙观 (worldview). Culturally, 宙 relates to traditional Chinese ideas of time and space as boundless.

Common words containing 宙 include: 宇宙 (yǔ zhòu) — The universe or cosmos.; 宇宙飞船 (yǔ zhòu fēi chuán) — Spaceship or spacecraft.; 宇宙观 (yǔ zhòu guān) — Worldview or cosmic outlook..