Relating to or expressed in the form of an equation; having the characteristics of a mathematical equation.
From 'equation' (a mathematical statement that two expressions are equal) plus '-al,' forming an adjective for things pertaining to equations.
Equational logic treats language like mathematics—if A = B and B = C, then A = C—but real language is messier; metaphors and context make equivalence slippery in ways equations never are.
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