Glory to Jesus Christ!
Latinization is the process of Eastern Orthodox and Eastern Catholic Churches taking on practices liturgical, customary, rubrical or spiritual even doctrinal which Latin Catholics adhere to--a process done in lands where Orthodox are either not the majority or one forced on them in Orthodox lands by hierarchs or even in the case of Czar Peter the Great--a wholescale repression of traditional Orthodox life, manners, dress, and revision of ecclesiastical government to follow the German Lutheran Church, etc.
This process of latinization, anglicanization, or lutheranization of aspects of Eastern Orthodox Churches in Slavic lands was accomplished in the 17th Century onward. Our Eastern Orthodox Churches have not only been latinized, but they have also been in the US through a process of americanization, anglicanization, and through a the use of economia, bishops have allowed a Western Rite to be authorized in some jurisdictions of the Orthodox Church (Western Rite and use of BCP is an issue for another topic). Pews, kneelers, organs, stained glass, the use of hymnbooks etc, comes from Orthodox interaction and use of the Episcopal, Anglican Churches, and Lutheran Churches, and shows another example of this process of assimilation. Use of black vestments is a latinization; using paintings instead of true canonical ikons in parishes is either a latinization, anglicanization, or lutheranization.
Many of our older catechisms support the notions of original sin and transubstantiation and are patterned after Latin, Lutheran, Reformed, or Anglican catechisms. There are so many examples of this process in Orthodox Churches and I will not list them all here. But, in regard the Mystery of Repentance, Slavic Churches, as noted in the Slavic Form of Absolution, have taken on the Latin theological doctrine of Absolution, of Orthodox Priest as Alter Christus, Another Christ, who by his power forgives sin; in some cases Lutheran notions of confession have crept in as well. In Orthodox theology priest is only witness and physician or in a more accurate manner of speaking the Great Physician's assistant, but it is God who Forgives and Heals the repentent one who stands before the Ikon of Christ not a potestas or power inherent in a character or mark placed on the priest's soul by the eparch at his ordination.