Pregn., that faculty of the mind which forms the basis of computation and calculation , and hence of mental action in general, i. e. judgment , understanding , reason ; so, nulla ratio est, with an objectclause ; cf. with dat.

http://lila-erc.eu/data/lexicalResources/LewisShort/id/LexicalSense/n40449.17 an entity of type: LexicalSense

Pregn., that faculty of the mind which forms the basis of computation and calculation , and hence of mental action in general, i. e. judgment , understanding , reason ; so, nulla ratio est, with an objectclause ; cf. with dat. 
Pregn., that faculty of the mind which forms the basis of computation and calculation , and hence of mental action in general, i. e. judgment , understanding , reason ; so, nulla ratio est, with an objectclause ; cf. with dat. 

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