1.Definition: (sometimes followed by `with') in agreement or consistent or reliable
"Testimony consistent with the known facts", "I have decided that the course of conduct which I am following is consistent with my sense of responsibility as president in time of war"
2.Definition: capable of being reproduced
3.Definition: marked by an orderly, logical, and aesthetically consistent relation of parts
4.Definition: the same throughout in structure or composition
"Bituminous coal is often treated as a consistent and homogeneous product"