(1):

(a.) Sticking together; cleaving; as the parts of bodies; solid or fluid.

(2):

(a.) Composed of mutually dependent parts; making a logical whole; consistent; as, a coherent plan, argument, or discourse.

(3):

(a.) Logically consistent; - applied to persons; as, a coherent thinker.

(4):

(a.) Suitable or suited; adapted; accordant.