# 軌道
## Chinese
### Pronunciation

* Mandarin
    (Pinyin): guǐdào
    (Zhuyin): ㄍㄨㄟˇ ㄉㄠˋ
* Cantonese (Jyutping): gwai$^2$ dou$^6$
* Hakka
    (Sixian, PFS): kúi-tho
    (Hailu, HRS): gui$^ˊ$ to$^˖$
* Southern Min
    (Hokkien, POJ): khúi-tō͘ / kúi-tō / khúi-tō
    (Teochew, Peng'im): kui$^2$ dao$^6$
* Wu (Shanghai, Wugniu): $^5$kue-dau; $^1$kue-dau
* Mandarin
** (Standard Chinese)
*** Hanyu Pinyin: guǐdào
*** Zhuyin: ㄍㄨㄟˇ ㄉㄠˋ
*** Tongyong Pinyin: guěidào
*** Wade–Giles: kuei$^3$-tao$^4$
*** Yale: gwěi-dàu
*** Gwoyeu Romatzyh: goeidaw
*** Palladius: гуйдао (gujdao)
*** Sinological IPA : /ku̯eɪ̯²¹⁴⁻²¹ tɑʊ̯⁵¹/
*** Homophones: [Show/Hide]$^{edit}$軌道／轨道 鬼道
* Cantonese
** (Standard Cantonese, Guangzhou–Hong Kong)
*** Jyutping: gwai$^2$ dou$^6$
*** Yale: gwái douh
*** Cantonese Pinyin: gwai$^2$ dou$^6$
*** Guangdong Romanization: guei$^2$ dou$^6$
*** Sinological IPA : /kʷɐi̯³⁵ tou̯²²/
* Hakka
** (Sixian, incl. Miaoli and Neipu)
*** Pha̍k-fa-sṳ: kúi-tho
*** Hakka Romanization System: gui$^ˋ$ to
*** Hagfa Pinyim: gui$^3$ to$^4$
*** Sinological IPA: /ku̯i³¹ tʰo⁵⁵/
** (Hailu, incl. Zhudong)
*** Hakka Romanization System: gui$^ˊ$ to$^˖$
*** Sinological IPA: /kui²⁴⁻³³ tʰo³³/
* Southern Min
** (Hokkien: Quanzhou)
*** Pe̍h-ōe-jī: khúi-tō͘
*** Tâi-lô: khuí-tōo
*** Phofsit Daibuun: quy'do
*** IPA (Quanzhou): /kʰui⁵⁵⁴⁻²⁴ tɔ⁴¹/
** (Hokkien: General Taiwanese)
*** Pe̍h-ōe-jī: kúi-tō
*** Tâi-lô: kuí-tō
*** Phofsit Daibuun: kuy'doi
*** IPA (Taipei): /kui⁵³⁻⁴⁴ to³³/
*** IPA (Kaohsiung): /kui⁴¹⁻⁴⁴ tɤ³³/
** (Hokkien: variant in Taiwan, Xiamen, Zhangzhou)
*** Pe̍h-ōe-jī: khúi-tō
*** Tâi-lô: khuí-tō
*** Phofsit Daibuun: quy'doi
*** IPA (Taipei): /kʰui⁵³⁻⁴⁴ to³³/
*** IPA (Xiamen, Zhangzhou): /kʰui⁵³⁻⁴⁴ to²²/
*** IPA (Kaohsiung): /kʰui⁴¹⁻⁴⁴ tɤ³³/
** (Teochew)
*** Peng'im: kui$^2$ dao$^6$
*** Pe̍h-ōe-jī-like: khúi tău
*** Sinological IPA : /kʰui⁵²⁻³⁵ tau³⁵/
* Wu
** (Northern: Shanghai)
*** Wugniu: $^5$kue-dau; $^1$kue-dau
*** MiniDict: kue$^去$ dau; kue$^平$ dau
*** Wiktionary Romanisation (Shanghai): $^2$kue-dau; $^1$kue-dau
*** Sinological IPA (Shanghai): /kue³³ dɔ⁴⁴/, /kue⁵⁵ dɔ²¹/
* Middle Chinese: kwijX dawX
Rime :
| Character | 軌 | 道 |
| Reading # | 1/1 | 1/1 |
| Initial (聲) | 見 (28) | 定 (7) |
| Final (韻) | 脂 (18) | 豪 (89) |
| Tone (調) | Rising (X) | Rising (X) |
| Openness (開合) | Closed | Open |
| Division (等) | III | I |
| Fanqie | 居洧切 | 徒晧切 |
| Baxter | kwijX | dawX |
| Reconstructions |||
| Zhengzhang Shangfang | /kˠiuɪ$^X$/ | /dɑu$^X$/ |
| Pan Wuyun | /kʷᵚi$^X$/ | /dɑu$^X$/ |
| Shao Rongfen | /kiuɪ$^X$/ | /dɑu$^X$/ |
| Edwin Pulleyblank | /kjwi$^X$/ | /daw$^X$/ |
| Li Rong | /kjui$^X$/ | /dɑu$^X$/ |
| Wang Li | /kwi$^X$/ | /dɑu$^X$/ |
| Bernhard Karlgren | /kwi$^X$/ | /dʱɑu$^X$/ |
| Expected Mandarin Reflex | guǐ | dào |
| Expected Cantonese Reflex | gwai$^2$ | dou$^6$ |
* Old Chinese
    (Baxter–Sagart): /*kʷruʔ [kə.l]ˤuʔ/
    (Zhengzhang): /*kʷrɯwʔ l'uːʔ/
Baxter–Sagart system 1.1 (2014) :
| Character | 軌 | 道 |
| Reading # | 1/1 | 2/2 |
| Modern Beijing (Pinyin) | guǐ | dào |
| Middle Chinese | ‹ kwij$^X$ › | ‹ daw$^X$ › |
| Old Chinese | /*kʷruʔ/ | /*[kə.l]ˁuʔ/ |
| English | wheel ruts | way |
| Notes for Old Chinese notations in the Baxter–Sagart system: * Parentheses "" indicate uncertain presence; * Square brackets "" indicate uncertain identity, e.g. *[t] as coda may in fact be *-t or *-p; * Angle brackets "<>" indicate infix; * Hyphen "-" indicates morpheme boundary; * Period "." indicates syllable boundary. |||
Zhengzhang system (2003) :
| Character | 軌 | 道 |
| Reading # | 1/1 | 1/1 |
| No. | 6958 | 11669 |
| Phonetic component | 九 | 首 |
| Rime group | 幽 | 幽 |
| Rime subdivision | 2 | 1 |
| Corresponding MC rime | 軌 | 道 |
| Old Chinese | /*kʷrɯwʔ/ | /*l'uːʔ/ |

### Noun

軌道
* railroad track; railway; tram line
* (astronomy) orbit
* (chemistry) orbital
* trajectory

#### Derived terms

* 上軌道／上轨道 (shàng guǐdào)
* 雜化軌道／杂化轨道 (záhuà guǐdào)

#### Related terms

* 路線／路线 (lùxiàn)

### Verb

軌道
* (archaic and uncommon, figurative) to abide by the laws and regulations; to follow the ways of propriety (literally, "to ride on the [correct, proper] track")
    From: Jia Yi (賈誼), c. 173 BCE. On the Government of Peace (《治安策》).
    Zhūhóu guǐdào, bīnggé bùdòng. [Pinyin]
    The Nobility abides by the laws, and martial implements are put to rest.

## Japanese

Kanji in this term :
| 軌 | 道 |
| き Grade: S | どう Grade: 2 |
| on'yomi ||

### Pronunciation

* (Tokyo) きどー [kìdóó] (Heiban – [0])
* IPA: [kʲido̞ː]

### Noun

軌(き)道(どう) • (kidō)
* (astronomy) orbit
* (chemistry) orbital
* railroad track
* trajectory

### References

* ↑ Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tokyo: Sanseidō, →ISBN

## Korean

Hanja in this term :
| 軌 | 道 |

### Noun

軌道 • (gwedo) (hangeul 궤도)
* hanja form of 궤도 (“railroad track; (astronomy) orbit”)

## Vietnamese

chữ Hán Nôm in this term :
| 軌 | 道 |

### Noun

軌道
* chữ Hán form of quỹ đạo (“trajectory; (astronomy) orbit”).