"The mitre (British English) (/ˈmaɪtər/; Greek: μίτρα, "headband" or "turban") or miter (American English; see spelling differences), is a type of headgear now known as the ...
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traditional, ceremonial head-dress of bishops and certain abbots in traditional Christianity. Mitres are worn in the Catholic Church, Orthodox Church, as well as in the Anglican Communion, some Lutheran churches, and also bishops and certain other clergy in the Eastern Catholic Churches and the Oriental Orthodox Churches. The Metropolitan of the Malankara Mar Thoma Syrian Church also wears a mitre during important ceremonies such as the Episcopal Consecration." - (en.wikipedia.org 03.12.2019)