I already have. You asked for chapter and verse that says "the Bible is the supreme authority in all matters of doctrine and practice," but as said, it is abundantly evidenced that the word of God/the Lord was normally written, even if sometimes first being spoken, and that as written, Scripture became the transcendent supreme standard for obedience and testing and establishing truth claims as the wholly Divinely inspired and assured, Word of God.
And which also testifies (Lk. 24:27,44; Acts 17:2,11; 18:28; 28:23, etc.) to writings of God being recognized and established as being so (essentially due to their unique and enduring heavenly qualities and attestation), and thus they materially provide for a canon of Scripture (as well as for reason, the church, etc.) is .
And just so we are all clear on the meaning of the word DEFINITION.. noun 1. ... making something definite, distinct, or clear:...2. the formal statement of the meaning...3. the condition of being definite, distinct, or clearly outlined:
You forgot to include your source: http://dictionary.reference.com/browse/definitions. But that is a strawman premise, as neither Caths nor SS adherents hold that for something to be Scriptural then it must then it must be definite, distinct, or clearly outlined or a formal statement, as such would exclude many arguments put forth by your comrades for doctrine we both concur on and especially for those we do not, from perpetual ensured magisterial infallibility to prayer to created beings in Heaven and more.
Therefore once again you are simply engaging in sophistry.
But that SS is taught in Scripture in principal and the collective weight of precepts has been shown to you - to which more can be added by God's grace if object - thus strawmen or sophistry is all that RCs have left. Which would But that SS means all doctreine
You are wrong. I will pray for you as well s the rest of the non-Catholics.