How to Write 桡 (ráo) — Meaning “Radius (bone) / Oar”

Imagine you are rowing a boat with a wooden oar, and say "Rao! Rao!" as you row – 桡 sounds like "row". This connects the wood radical and the oar meaning. For the medical meaning, think of "radius" starting with R, just like 桡's pinyin ráo.

Write the left radical 木 first (horizontal, vertical, left-falling, right-falling), then the right part 尧: horizontal, angled hook, left-falling, horizontal, left-falling, vertical curved hook. Keep the left side narrow and the right side wider. A common mistake is to confuse the right part with 戈, so be careful with the hook and the final curved stroke.

桡 has the right part 尧, while 杪 has 少 (meaning small or tip) and 杭 has 亢 (meaning tall or to resist). In meaning, 桡 refers to an oar or the radius bone, 杪 means treetop or tip of a branch, and 杭 is used in place names like Hangzhou or means to sail. Visually, 桡's right side has a hook and curve, while 杪 has a 'small' shape and 杭 has a vertical stroke ending.

桡 is most commonly used in medical terms, such as 桡骨 (radius bone) and 桡动脉 (radial artery). It is not part of the HSK vocabulary, so everyday conversation rarely uses it. The oar meaning appears in classical poetry or historical texts, but modern Chinese uses the word 桨 (jiǎng) for oar instead.

Common words containing 桡 include: 桡骨 (ráo gǔ) — Radius (bone); 桡动脉 (ráo dòng mài) — Radial artery; 舟桡 (zhōu ráo) — oars of a boat.