Definition of proportional in English:

proportional

adjective

  • 1Corresponding in size or amount to something else.

    ‘the punishment should be proportional to the crime’
    • ‘History has shown that such groups will have voluntary, or involuntary, leaks proportional to the size of the group.’
    • ‘The intensity of the fluorescence is proportional to the amount of product being made.’
    • ‘The circle sizes are proportional to the numbers of molecules they represent.’
    • ‘This shows countries drawn as geometric blocks whose size is proportional to the nation's total GDP.’
    • ‘Their ability to do so was assumed to be proportional to the size of their landholdings.’
    • ‘These odds are inversely proportional to the amount of your insurance payment.’
    • ‘Thus, the magnitude of the Effect is proportional to the size of the population that causes it.’
    • ‘Regardless of the particular model, the dollar impacts are small and roughly proportional to income.’
    • ‘As such the amount paid in fees, proportional to the amount under management, has continued to increase.’
    • ‘I think the amount they complain is directly proportional to the amount of money they make.’
    • ‘And it's got to be roughly proportional and roughly balanced, or else it breaks down.’
    • ‘The effects of these gases were directly proportional to the amount inhaled by the soldier.’
    • ‘The amount of injury is proportional to the duration and severity of the ischemia.’
    • ‘We may find that the numbers of collectors are proportional to modern population size or we may not.’
    • ‘Swords and knives, especially, were made to be directly proportional to the size of the user.’
    • ‘Broadly speaking biodiversity is proportional to the amount of area that you can develop it in.’
    • ‘The amount of tiles left out will be proportional to the size of the tile.’
    • ‘The amount produced is proportional to the cooking time and accumulates with a second and subsequent heating.’
    • ‘The amounts produced are proportional to the size of the gland, whether this is increased benignly or by prostate cancer.’
    • ‘The stress generated by a situation seems to be inversely proportional to the amount of control you have over it.’
    corresponding, proportionate, comparable, in proportion, pro rata, commensurate, equivalent, consistent, relative, correlated, correlative, analogous, analogical
    commensurable
    View synonyms
    1. 1.1Mathematics
      (of a variable quantity) having a constant ratio to another quantity.
      • ‘Variances were assumed to be proportional to the square of the observed distances.’
      • ‘Instead the heat is inversely proportional to the square of the distance.’
      • ‘Edge lengths are proportional to inferred protein distances.’
      • ‘The ratio of the squares of the periods of two planets is directly proportional to the ratio of the cubes of the radii of their orbits.’
      • ‘Gravitational force is inversely proportional to the square of the distance between two objects.’

Usage

Except in certain long-established phrases, such as proportional representation, the adjectives proportional and proportionate may be used interchangeably

Origin

Late Middle English: from late Latin proportionalis, from proportio(n-) (see proportion).

Pronunciation:

proportional

/prəˈpôrSH(ə)n(ə)l/