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In English, the phrase rule of thumb refers to an approximate method for doing something, based on practical experience rather than theory. [1][2][3] This usage of the phrase can be traced back to the 17th century and has been associated with various trades where quantities were measured by comparison to the width or length of a thumb.
The meaning of RULE OF THUMB is a method of procedure based on experience and common sense.
RULE OF THUMB definition: 1. a practical and approximate way of doing or measuring something: 2. a practical and approximate…. Learn more.
A rule of thumb is a means of estimation made according to a rough and ready practical rule, not based on science or exact measurement. What's the origin of the phrase 'Rule of thumb'?
A rule of thumb is a guideline, idea, or principle that helps you make decisions. "Arrive early" is a good rule of thumb for most appointments.
What does the phrase rule of thumb mean? There are four meanings listed in OED's entry for the phrase rule of thumb . See ‘Meaning & use’ for definitions, usage, and quotation evidence.
A rule of thumb is a rule or principle that you follow which is not based on exact calculations, but rather on experience. A good rule of thumb is that a broker must generate sales of ten times his salary.