Longman Dictionary of Contemporary English homepage

equation

 noun
     
Related topics: Maths
e‧qua‧tion W3
1 [countable]HM a statement in mathematics that shows that two amounts or totals are equal:
In the equation 2x + 1 = 7, what is x?
2 [countable usually singular] the set of different facts, ideas, or people that all affect a situation and must be considered together:
The tourist industry forms a crucial part of the region's economic equation.
The question of cost has now entered the equation.
3 [singular] when you consider that two things are similar or connected:
the equation of violence with power
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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