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Definition of equation noun from the Oxford Advanced Learner's Dictionary

equation

noun
 
/ɪˈkweɪʒn/
 
/ɪˈkweɪʒn/
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  1. [countable] (mathematics) a statement showing that two amounts or values are equal, for example 2x + y = 54
    • the numbers on the right-hand side of the equation
    • the equation for a straight line
    see also differential equation, wave equation
    Extra Examples
    • The ideal gas equation is derived from this model.
    • This can be shown by a simple equation.
    • the range of values of ξ which would satisfy this equation
    Topics Maths and measurementc1
    Oxford Collocations Dictionaryadjective
    • basic
    • simple
    • complex
    verb + equation
    • solve
    • work out
    • derive
    preposition
    • equation for
    phrases
    • a side of the equation
    See full entry
  2. [uncountable, singular] the act of making something equal or considering something as equal (= of equating them)
    • The equation of wealth with happiness can be dangerous.
  3. [countable, usually singular] a problem or situation in which several things must be considered and dealt with
    • When children enter the equation, further tensions may arise within a marriage.
    • Money also comes into the equation.
    • The availability of public transport is also part of the equation.
    Oxford Collocations Dictionaryverb + equation
    • be a part of
    • come into
    • enter
    See full entry
  4. Word Originlate Middle English: from Latin aequatio(n-), from aequare ‘make equal’, from aequus ‘even, level, equal’.
See equation in the Oxford Advanced American DictionarySee equation in the Oxford Learner's Dictionary of Academic English
alloy
noun
 
 
From the Topic
Physics and chemistry
C2
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