Keywords: logic, logical
As a Noun
1. A method of reasoning that involves a series of statements, each of which must be true if the statement before it is true. English = logic.
As a Verb or Adjective
1. Of conclusions, results or outcomes, to be the only one that can reasonably result from a particular set of facts or from a particular event. English = (be) logical.
2. To be true according to the rules of logic. English = (be) logical.