collocation · neutral

body mass index

UK/ˈbɒdi ˌmæs ˈɪndɛks/US/ˈbɑːdi ˌmæs ˈɪndɛks/BOD·y MASS IN·dex

Band 6-7speakingtask1task2

A number calculated from a person's weight and height, used to classify underweight, normal weight, overweight or obesity.

Examples

Doctors often use body mass index to assess a patient's weight category.

Her body mass index falls within the healthy range.

BMI is a quick screening tool but it does not measure body fat directly.

Band 8 sentence

While BMI remains contested as a perfect metric, it is still widely used for population-level health surveillance.

Collocations

  • calculate body mass index
  • measure body mass index

Word family

BMI abbreviationbody-mass index noun

Common mistakes

BMI indexBMI

body massbody mass index

Say it for a higher band

5weight6body mass7+body mass index

Synonyms

BMI

Easily confused

body weight

A person's body mass index takes both weight and height into account.

Related words

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In Health & Fitness

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