chu vi

Vietnamese

Etymology

    Sino-Vietnamese word from 周圍, composed of 周 (“circumference”) and 圍 (“to surround”).

    Pronunciation

    • (Hà Nội) IPA(key): [t͡ɕu˧˧ vi˧˧]
    • (Huế) IPA(key): [t͡ɕʊw˧˧ vɪj˧˧]
    • (Saigon) IPA(key): [cʊw˧˧ vɪj˧˧] ~ [cʊw˧˧ jɪj˧˧]

    Noun

    chu vi

    1. (geometry) a perimeter
      chu vi hình vuông ― the perimeter of a square
      chu vi hình tròn ― the perimeter/circumference of a circle
    2. surroundings; vicinity; periphery

    Usage notes

    Unlike English perimeter, chu vi has no specific hyponym for "circumference". The độ dài đường tròn (literally “length of a circular line”) is often called the chu vi hình tròn (literally “bound of a circular shape”) in elementary geometry, just like the chu vi hình vuông (literally “bound of a squared shape”), which is properly called "perimeter" in English. In middle-school and higher geometry, precise terminology and distinctions must be understood.

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