Radical 18

刀
← 17 Radical 18 (U+2F11) 19 →
刀 (U+5200) "knife"
Pronunciations
Pinyin:	dāo
Bopomofo:	ㄉㄠ
Wade–Giles:	tao1
Cantonese Yale:	dou1
Jyutping:	dou1
Pe̍h-ōe-jī:	to
Japanese Kana:	トウ tō (on'yomi) かたな katana (kun'yomi)
Sino-Korean:	도 do
Names
Chinese name(s):	(刂) 立刀旁 lìdāopáng
Japanese name(s):	刀 katana (刂) 立刀/りっとう rittō
Hangul:	칼 kal
Stroke order animation

Radical 18 or radical knife (刀部) meaning "knife" is one of 23 Kangxi radicals (214 radicals total) composed of 2 strokes.

When appearing at the right side of a Chinese character, it usually transforms into 刂.

In the Kangxi Dictionary, there are 377 characters (out of 49,030) to be found under this radical.

刀 is also the 22nd indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China. Two associated indexing components, 刂 and ⺈, are affiliated to the principal indexing component 刀.

Evolution

• 
  Oracle bone script character
• 
  Bronze script character
• 
  Large seal script character
• 
  Small seal script character

Derived characters

Strokes	Characters
+0	刀 刁 刂component only
+1	刃SC/KO/刃TC/刃JP 刄 (=刃)
+2	刅 分 切 刈
+3	刉 刊 刋 (=刊) 刌 刍SC (=芻 -> 艸)
+4	刎 刏 刐 刑 划 刓 刔 刕 刖 列 刘SC (=劉) 则SC (=則) 刚SC (=剛) 创SC (=創)
+5	刜 初 刞 刟 删SC variant (=刪) 刡 刢 刣 判 別TC/JP variant 刦 (=劫 -> 力) 刧 (=劫 -> 力) 刨 利 刪TC/JP variant 别SC variant (=別) 刬SC (=剗) 刭SC (=剄)
+6	刮 刯 到 刱 (=創) 刲 刳 刴 (=剁) 刵 制 刷 券 刹SC/JP (=剎) 刺 刻 刼 (=劫 -> 力) 刽SC (=劊) 刾SC (=㓨) 刿SC (=劌) 剀SC (=剴) 剁 剂SC (=劑)
+7	剃 剄 剅 剆 則 剈 剉 削 剋 剌 前 剎 剏 (=創) 剐SC (=剮) 剑SC (=劍)
+8	剒 剓 剔 剕 剖 剗 剘 剙 (=創) 剚 剛 剜 剝 剞 剟 剠 剡 剢 剣JP (=劍) 剤JP (=劑) 剥SC/JP (=剝) 剦 (=閹 -> 門) 剧SC (=劇) 剮GB TC variant
+9	剨 剪 剫 剬 剭 剮Traditional variant 副 剰JP (=剩) 剱JP nonstandard (=劍)
+10	剩 割 剳 剴 創 剶
+11	剷 剸 剹 剺 剻 剼 剽 剾 剿
+12	劀 劁 劂 劃 劄
+13	劅 劆 劇 劈 劉 劊 劋 劌 劍 劎 (=劍) 劏
+14	劐 劑 劒 (=劍) 劓 劔 (=劍)
+15	劕
+17	劖
+19	劗 劘
+21	劙 劚

Sinogram

As an isolated character it is one of the Kyōiku kanji or a kanji taught in second grade.^[1]

References

Literature

• Fazzioli, Edoardo (1987). Chinese calligraphy : from pictograph to ideogram : the history of 214 essential Chinese/Japanese characters. calligraphy by Rebecca Hon Ko. New York: Abbeville Press. ISBN 0-89659-774-1.
• Leyi Li: “Tracing the Roots of Chinese Characters: 500 Cases”. Beijing 1993, ISBN 978-7-5619-0204-2

External links

1 stroke2 strokes3 strokes4 strokes5 strokes6 strokes7 strokes8 strokes9 strokes10 strokes11 strokes12 strokes13 strokes14 strokes15 strokes16 strokes17 strokes