How to Write 埃 (āi) — Meaning “dust; Angstrom”

Imagine dust (土) settling on a person who says "Ah!" (矣 sounds like "ai") as they sneeze. The character 埃 looks like soil particles floating in the air, making you say "Ay!" when you breathe them in.

The left radical 土 should be written with the bottom horizontal stroke changing to a diagonal lift (提) when used as a radical. The right part 矣 has six strokes: first write the top 厶 (si), then the bottom 矢 (shi), making sure the last stroke is a downward left-falling stroke (捺). A common mistake is to write 土 too wide or to forget the lift on the bottom stroke.

埃 means dust or airborne particles, while 坡 means slope or hillside and 坤 means female or earth (in the Eight Trigrams). Visually, 埃 has the phonetic 矣 on the right, 坡 uses 皮, and 坤 uses 申. Although all share the 土 radical, their right halves change the meaning and pronunciation completely.

埃 appears in the country name 埃及 (Āijí, Egypt) and in scientific terms like 尘埃 (chén'āi, dust). It is also used in physics as the unit Angstrom (埃米, āimǐ), which measures very small lengths. This character is not common in everyday conversation but appears in formal, scientific, or geographic contexts.

Common words containing 埃 include: 埃及 (āi jí) — Egypt; 尘埃 (chén āi) — Dust; airborne particles; 埃米 (āi mǐ) — Angstrom (unit of length).