What is Judicial Power?

Legal Definition
Authority, both constitutional and legal, given to the courts and its judges (1) to preside over and render judgment on court-worthy cases; (2) to enforce or void statutes and laws when scope or constitutionality are questioned (3) to interpret statutes and laws when disputes arise.
Legal Definition
The authority vested in courts and judges, as distinguished from the executive and legislative power. Gilbert v. Priest, 65 Barb. (N. Y.) 448; In re Walker, 68 App. Div. 196, 74 N. Y. Supp. 94 ; State v. Denny, 118 Ind. 382, 21 N. E. 252, 4 L. R. A. 79 ; In S. v. Kendall, 26 Fed. Cas. 753.
-- Black's Law Dictionary
Legal Definition
The power vested in the courts; the power vested in any public officer to perform judicial acts. See 77 Ala. 422, 54 Am. Rep. 65.
-- Ballentine's Law Dictionary