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ratio

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noun [countable] math ratio pronunciation in American English /ˈreɪʃoʊ/ 
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singularratio
pluralratios
  1. a relationship between the sizes of two numbers or amounts

    a teacher-student ratio of 1:20 (=1 teacher for every 20 students)

    the ratio of someone/something to someone/something:

    The ratio of expenditure to revenue was an alarming 4:1.

    sex ratio (=numbers of men and women):

    We are aiming for a more equal sex ratio on our staff.

creep

used with other nouns to describe the unexpected and often unwanted effects of a particular situation or trend

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sandwich woman

a woman in middle age who has to juggle caring for teenage children and ageing parents with a career

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