開方 [开－]

Jyutping hoi1 fong1
Pinyin kāi fāng

Definitions (CC-CEDICT)
  1. (medicine) to write out a prescription
  2. (math.) to extract a root from a given quantity
Definitions (粵典–words.hk)
  1. 動詞
    將某​個​數​嘅​二次方​還原​返​去​嗰​個​數​，​亦​即​係​二分之一​次方
    to take square root
    • 開方三
      开方三
      hoi1 fong1 saam1
      square root of 3
    • 開方十六係四。
      开方十六系四。
      hoi1 fong1 sap6 luk6 hai6 sei3.
      The square root of 16 is 4.
    • 將呢個數開方兩次。
      将呢个数开方两次。
      zoeng1 ni1 go3 sou3 hoi1 fong1 loeng5 ci3.
      Take the square root of the number twice.
  2. 動詞
    中醫開​藥方
    (Chinese medicine) to write a prescription
Definitions (Wiktionary)
  1. verb, verb-object
    to extract a root
    (syn.) 开根, 開根
  2. verb, verb-object
    to write a prescription
  3. name
    a minion of Duke Huan of Qi, sometimes identified as Duke Wen of Wei
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）
Examples (粵典–words.hk)
  1. Cantonese
    開方三
    开方三
    hoi1 fong1 saam1
    • square root of 3
  2. Cantonese
    開方十六係四。
    开方十六系四。
    hoi1 fong1 sap6 luk6 hai6 sei3.
    • The square root of 16 is 4.
  3. Cantonese
    將呢個數開方兩次。
    将呢个数开方两次。
    zoeng1 ni1 go3 sou3 hoi1 fong1 loeng5 ci3.
    • Take the square root of the number twice.
  4. Cantonese
    你逐個數拎出嚟試，睇下俾二除唔除得開，跟住試三、五、七，逐個質數試，試到嗰個數嘅開方為止。
    你逐个数拎出嚟试，睇下俾二除唔除得开，跟住试三、五、七，逐个质数试，试到𠮶个数嘅开方为止。
    nei5 zuk6 go3 sou3 ling1 ceot1 lai4 si3, tai2 haa5 bei2 ji6 ceoi4 m4 ceoi4 dak1 hoi1, gan1 zyu6 si3 saam1, ng5, cat1, zuk6 go3 zat1 sou3 si3, si3 dou3 go2 go3 sou3 ge3 hoi1 fong1 wai4 zi2.
    • You test the numbers one by one. First you check if it's divisible by 2, and then try 3, 5, and 7, and try every prime number until you reach the square root of that number.
Examples (Wiktionary)
  1. Mandarin
    開方子
    开方子
    kāi fāng zi
    • to write out a traditional Chinese medicine prescription