logic

Meanings

1. 1
   noun

   A sensible way of thinking that uses clear reasons.

   There is no logic in paying more for the same product.

2. 2
   noun

   The set of ideas or reasons behind a decision or system.

   I couldn't follow the logic of his argument.

3. 3
   noun

   The study of correct reasoning as a subject.

   She took a course in logic at university.

From Middle English logik, from Old French logike, from Latin logica, from Ancient Greek λογική (logikḗ, “logic”), from feminine of λογικός (logikós, “of or pertaining to speech or reason or reasoning, rational, reasonable”), from λόγος (lógos, “speech, reason”). Displaced native Old English flitcræft (literally “art of arguing”).

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