mou4 lei5 sou3無理數无理数
Jyutpingmou4 lei5 sou3
Yalemòuh léih sou
Definition
Irrational number; a real number that cannot be expressed as a ratio of two integers.
neutralschool
How it's used
Mathematical terminology in Cantonese often mirrors the structure of formal Chinese, but is frequently explained using colloquial particles to make abstract concepts feel more accessible. While used in academic settings, speakers will often use the English term "irrational number" interchangeably in casual conversation or tutoring contexts.
Measure word
go3個goExamples
Pi is an irrational number.
Related words
Common phrases
set of irrational numbers
Common mistake
Learners sometimes confuse the mathematical term 無理數 with the phrase 無道理, which means "unreasonable" or "lacking logic" in a social or behavioral context.
Grammar color guide
Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector
Grammar guides
- QuestionsFrom yes or no questions to asking who, what, where, and when. The patterns you need to ask questions naturally in Cantonese.
- ClassifiersCantonese puts a classifier between a number and a noun, and a bare classifier on its own can mean the. Learn the common ones and how to use them.
- ComparisonsHow to say bigger than, the most, the same as, and not as good as. Cantonese uses 過 where Mandarin uses 比, and that catches a lot of learners out.
