1.Definition: based on known statements or events or conditions

"Rain was a logical expectation, given the time of year"

Related Adjective(s):legitimate

2.Definition: capable of or reflecting the capability for correct and valid reasoning

"A logical mind"

3.Definition: capable of thinking and expressing yourself in a clear and consistent manner

Related Adjective(s):coherent, lucid

4.Definition: marked by an orderly, logical, and aesthetically consistent relation of parts

Related Adjective(s):coherent, consistent, ordered