# 速度
## Chinese
### Pronunciation

* Mandarin
    (Pinyin): sùdù
    (Zhuyin): ㄙㄨˋ ㄉㄨˋ
* Cantonese (Jyutping): cuk$^1$ dou$^6$
* Hakka
    (Sixian, PFS): suk-thu
    (Hailu, HRS): sug tu$^˖$
* Puxian Min (Pouseng Ping'ing): sorh$^6$ dou$^5$
* Southern Min
    (Hokkien, POJ): sok-tō͘
    (Teochew, Peng'im): sog$^4$ dou$^7$
* Mandarin
** (Standard Chinese)
*** Hanyu Pinyin: sùdù → sùdu (toneless final syllable variant)
*** Zhuyin: ㄙㄨˋ ㄉㄨˋ → ㄙㄨˋ ˙ㄉㄨ (toneless final syllable variant)
*** Tongyong Pinyin: sùdů
*** Wade–Giles: su$^4$-tu$^5$
*** Yale: sù-du
*** Gwoyeu Romatzyh: suh.duh
*** Palladius: суду (sudu)
*** Sinological IPA : /su⁵¹⁻⁵³ tu⁵¹/ → /su⁵¹ d̥u¹/
* Cantonese
** (Standard Cantonese, Guangzhou–Hong Kong)
*** Jyutping: cuk$^1$ dou$^6$
*** Yale: chūk douh
*** Cantonese Pinyin: tsuk$^7$ dou$^6$
*** Guangdong Romanization: cug$^1$ dou$^6$
*** Sinological IPA : /t͡sʰʊk̚⁵ tou̯²²/
* Hakka
** (Sixian, incl. Miaoli and Neipu)
*** Pha̍k-fa-sṳ: suk-thu
*** Hakka Romanization System: sug$^ˋ$ tu
*** Hagfa Pinyim: sug$^5$ tu$^4$
*** Sinological IPA: /suk̚² tʰu⁵⁵/
** (Hailu, incl. Zhudong)
*** Hakka Romanization System: sug tu$^˖$
*** Sinological IPA: /suk⁵⁻² tʰu³³/
* Puxian Min
** (Putian)
*** Pouseng Ping'ing: sorh$^6$ dou$^5$ [Phonetic: sorh$^4$ dou$^5$]
*** Sinological IPA : /ɬɒʔ¹⁻⁴² tɔu²¹/
** (Xianyou)
*** Pouseng Ping'ing: sorh$^6$ dou$^5$ [Phonetic: sorh$^7$ dou$^5$]
*** Sinological IPA : /ɬɒʔ²⁻²⁴ tɔu²¹/
* Southern Min
** (Hokkien)
*** Pe̍h-ōe-jī: sok-tō͘
*** Tâi-lô: sok-tōo
*** Phofsit Daibuun: sokdo
*** IPA (Xiamen): /sɔk̚³²⁻⁴ tɔ²²/
*** IPA (Quanzhou): /sɔk̚⁵⁻²⁴ tɔ⁴¹/
*** IPA (Zhangzhou): /sɔk̚³²⁻⁵ tɔ²²/
*** IPA (Taipei): /sɔk̚³²⁻⁴ tɔ³³/
*** IPA (Kaohsiung): /sɔk̚³²⁻⁴ tɔ³³/
** (Teochew)
*** Peng'im: sog$^4$ dou$^7$
*** Pe̍h-ōe-jī-like: sok tōu
*** Sinological IPA : /sok̚²⁻⁴ tou¹¹/

### Noun

速度
* (physics) velocity
* (in general) speed; rate; pace
    建議速度／建议速度 ― jiànyì sùdù ― suggested speed

#### Synonyms

* (speed):
* 快慢 (kuàimàn)
* 速率 (sùlǜ) (physics)

#### Derived terms

* 初速度 (chūsùdù)
* 加速度 (jiāsùdù)
* 宇宙速度 (yǔzhòu sùdù)
* 平均速度 (píngjūn sùdù)
* 相速度 (xiàngsùdù)
* 瞬時速度 / 瞬时速度 (shùnshí sùdù)
* 第一宇宙速度 (dì-yī yǔzhòusùdù)
* 第三宇宙速度 (dì-sān yǔzhòusùdù)
* 第二宇宙速度 (dì-èr yǔzhòusùdù)
* 線速度 / 线速度 (xiànsùdù)
* 群速度 (qúnsùdù)
* 角速度 (jiǎosùdù)
* 速度計 / 速度计 (sùdùjì)

#### Descendants

* → Japanese: 速(そく)度(ど) (sokudo)
* → Korean: 속도(速度) (sokdo)
* → Vietnamese: tốc độ (速度)

## Japanese

Kanji in this term :
| 速 | 度 |
| そく Grade: 3 | ど Grade: 3 |
| on'yomi ||

### Pronunciation

* (Tokyo) そくど [sóꜜkùdò] (Atamadaka –)
* IPA: [so̞kɯ̟do̞]

### Noun

速(そく)度(ど) • (sokudo)
* speed; velocity
* (physics) velocity

#### Synonyms

* スピード (supīdo)

#### Derived terms

* 速度計(そくどけい) (sokudokei): speedometer
* 速度制限(そくどせいげん) (sokudoseigen): speed limit
* 速度違反(そくどいはん) (sokudoihan)
* 初速度(しょそくど) (shosokudo): initial velocity
* 終端速度(しゅうたんそくど) (shūtansokudo): terminal velocity

#### See also

* 速(はや)さ (hayasa): (absolute) velocity, speed

### References

* 2002, Ineko Kondō; Fumi Takano; Mary E Althaus; et. al., Shogakukan Progressive Japanese-English Dictionary, Third Edition, Tokyo: Shōgakukan, →ISBN.

### References

* ↑ NHK Broadcasting Culture Research Institute, editor (1998), NHK日本語発音アクセント辞典 [NHK Japanese Pronunciation Accent Dictionary] (in Japanese), Tokyo: NHK Publishing, Inc., →ISBN

## Korean

Hanja in this term :
| 速 | 度 |

### Noun

速度 • (sokdo) (hangeul 속도)
* hanja form of 속도 (“speed”)

## Vietnamese

chữ Hán Nôm in this term :
| 速 | 度 |

### Noun

速度
* chữ Hán form of tốc độ (“speed”).