一

一 U+4E00, 一 CJK UNIFIED IDEOGRAPH-4E00 ← ䷿ CJK Unified Ideographs 丁 →

𝍲 U+1D372, 𝍲 IDEOGRAPHIC TALLY MARK ONE ← 𝍱 Counting Rod Numerals 𝍳 →

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一

Stroke order (Sans-serif)

Stroke order

• ㆒ (U+3192) (Annotation mark for Japanese kanbun)
• 〡 (Suzhou numeral for one)
• ㈠, ㊀

Stroke order

See images of
Radical 1 一

一 (Kangxi radical 1, 一+0, 1 stroke, cangjie input 一 (M), four-corner 1000₀)

1. Kangxi radical #1, ⼀.
2. Shuowen Jiezi radical №1

• Appendix:Chinese_radical/一
• 𬂜, 𤰓, 𫢅, 𬏚, 𤕬, 𫜢, 㝉, 弌, 𬏚, 閂(闩)

• 壹 (Financial form of 一)
• 壱 (Japanese shinjitai of 壹)
• 弌 (Ancient form of 一)

• ㄧ (Zhuyin letter)

• Kangxi Dictionary: page 75, character 1
• Dai Kanwa Jiten: character 1
• Dae Jaweon: page 129, character 1
• Hanyu Da Zidian (first edition): volume 1, page 1, character 1
• Unihan data for U+4E00

Chinese Wikisource has digitized text of the Kangxi Dictionary entry for 一:

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Wikisource

• 一 on Wikidata.Wikidata

Wikipedia has articles on:

• 一 (Written Standard Chinese^?)
• 一 (Cantonese)
• 一 (Classical)

Historical forms of the character 一
Shang		Western Zhou		Spring and Autumn	Warring States			Shuowen Jiezi (compiled in Han)		Hanjian (compiled in Song)	Guwen Sishengyun (compiled in Song)	Jizhuan Guwen Yunhai (compiled in Song)	Liushutong (compiled in Ming)	Libian (compiled in Qing)	Tang Stone Classics	Kangxi Dictionary (compiled in Qing)
Bronze inscriptions	Oracle bone script	Bronze inscriptions	Oracle bone script	Bronze inscriptions	Bronze inscriptions	Chu slip and silk script	Qin slip script	Ancient script	Small seal script	Transcribed ancient scripts	Transcribed ancient scripts	Transcribed ancient scripts	Transcribed ancient scripts	Clerical script	Regular script	Ming typeface
Oracle bone script j00001 j00002 Bronze inscriptions B00001 B00002 B00003 B00004 B00005 B00006 B00007 B00008 B00009 B00010 B00011 B00012 B00013 B00014 B00015 Small seal script s00001 Transcribed ancient scripts L25931 L25932 L25933 L25934
References: Mostly from Richard Sears' Chinese Etymology site (authorisation), which in turn draws data from various collections of ancient forms of Chinese characters, including: Shuowen Jiezi (small seal), Jinwen Bian (bronze inscriptions), Liushutong (Liushutong characters) and Yinxu Jiaguwen Bian (oracle bone script).

Ideogram (指事) : a horizontal stroke, indicating the number “one”.

From Proto-Sino-Tibetan *ʔit. Descendants from the *ʔit etymon account for the majority of the dialectal forms for “one” in Chinese (Mandarin, Jin, Gan, Hakka, Hui, Xiang, Yue, Wu groups, etc.).

一

1. one

   一長一短／一长一短  ―  yī cháng yī duǎn  ―  one short and one long

   一死一傷／一死一伤  ―  yī sǐ yī shāng  ―  one dead, one injured

   一高一低  ―  yī gāo yī dī  ―  one high and one low

   一天一夜  ―  yī tiān yī yè  ―  one day and one night

   一日一夜 [Cantonese]  ―  jat¹ jat⁶ jat¹ je⁶   ―  one day and one night

   一左一右  ―  yī zuǒ yī yòu  ―  one left, one right

2. each; every

   給他們一人一顆蘋果。 [MSC, trad.]
   给他们一人一颗苹果。 [MSC, simp.]

   Gěi tā men yī rén yī kē píngguǒ.

   Give them an apple each.

3. single; alone

   獨自一人／独自一人  ―  dúzì yī rén  ―  a solitary person, one person

   專一／专一  ―  zhuānyī  ―  single-minded, monogamous

4. whole; entire; all: throughout

   他們在海灘上玩了一下午。 [MSC, trad.]
   他们在海滩上玩了一下午。 [MSC, simp.]

   Tāmen zài hǎitān shàng wán le yī xiàwǔ.

   They played the whole afternoon on the beach.

   垃圾一地都係。 [Cantonese, trad.]
   垃圾一地都系。 [Cantonese, simp.]

   laap⁶ saap³ jat¹ dei⁶ dou¹ hai⁶.

   There's rubbish throughout the floor.

5. same; identical

   大小不一  ―  dàxiǎo bùyī  ―  not having the same size

   大細不一／大细不一 [Cantonese]  ―  daai⁶ sai³ bat¹ jat¹   ―  not having the same size

6. (Classical) another; alternative

   蟋蟀，一名促織。 [MSC, trad.]
   蟋蟀，一名促织。 [MSC, simp.]

   Xīshuài, yī míng cùzhī.

   Crickets, also called rushing weavers rushing weavers].

7. (formal) certain aforementioned

   「旋律」一詞中的「旋」字 [MSC, trad.]
   「旋律」一词中的「旋」字 [MSC, simp.]

   “xuánlǜ” yī cí zhōng de “xuán” zì

   the character 旋 within the word 旋律 (xuánlǜ)

8. With the verb modified reduplicated, expressing the transience of the verb:
   1. Indicating that the action has occurred only once

      看一看  ―  kàn yī kàn  ―  to have a look

      望一望 [Cantonese]  ―  mong⁶ jat¹ mong⁶   ―  to have a look

   2. Indicating the intention to try

      算一算  ―  suàn yī suàn  ―  to try to calculate it

      計一計／计一计 [Cantonese]  ―  gai³ jat¹ gai³   ―  to try to calculate it

9. once; as soon as; upon

   一講曹操，曹操就到 [Cantonese, trad.]
   一讲曹操，曹操就到 [Cantonese, simp.]

   jat¹ gong² cou⁴ cou¹ ，cou⁴ cou¹ zau⁶ dou³

   speak of the devil and he shall appear

   一到OP就卡。  ―  Yī dào OP jiù kǎ.  ―  It slows down once I get to the opening.

   我一拍了照片，她就立即成為眾人矚目的焦點。 [MSC, trad.]
   我一拍了照片，她就立即成为众人瞩目的焦点。 [MSC, simp.]

   Wǒ yī pāi le zhàopiàn, tā jiù lìjí chéngwéi zhòngrén zhǔmù de jiāodiǎn.

   As soon as I took a picture, she ran towards the limelight.

10. ^† for the first time; at the beginning

    一見如故／一见如故  ―  yījiànrúgù  ―  to hit it off

11. ^† surprisingly; unexpectedly

    一至於此／一至于此  ―  yīzhìyúcǐ  ―  How did things ever get so far?

12. (gay slang) top

    一號／一号  ―  yīhào  ―  a top

13. (Cantonese, cant, euphemistic) to die
14. (Xiamen Hokkien) extremely; very; highly

• In Mandarin, when spelling “one” as a phone number, on dice, or in dominoes, one is often pronounced 幺.
• See pronunciation section for tone sandhi rules in Modern Standard Chinese. Also see Category:Mandarin words containing 一 undergoing tone sandhi and Category:Mandarin words containing 一 not undergoing tone sandhi.

• (extremely):