rule of thumb Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “rule of thumb” in the English Dictionary

"rule of thumb" in British English

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rule of thumb

C1 a ​practical and ​approximate way of doing or ​measuring something: A good rule of ​thumb is that a ​portion of ​rice is two ​handfuls.
(Definition of rule of thumb from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"rule of thumb" in American English

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rule of thumbnoun [C]

 /ˈrul əv ˈθʌm/ (plural rules of thumb)
a ​method of ​judging a ​situation or ​condition that is not ​exact but is ​based on ​experience: As a rule of thumb, the ​ice on the ​lake should be at least two ​inchesthick to ​support one ​person.
(Definition of rule of thumb from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “rule of thumb”
in Chinese (Simplified) 实用的估测方法, 经验之谈, 经验法则…
in Chinese (Traditional) 實用的估測方法, 經驗之談, 經驗法則…
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