Orthodox is a word about beliefs. It is made from two Ancient Greek words, ὀρθός orthós „correct, straight“ and δόξα dóxa „teaching, worship". Orthodoxy means a teaching that is supposed to be close to the original.
- Eastern Orthodox Church (The split of the Christian Church into the Roman Catholic Church and the Eastern Orthodox happened in 1054, in what is known as the Great Schism)
- Oriental Orthodox Church (Split from the rest in the 5th century, at the Council of Chalcedon)
- Theologically traditional often in all lower case-- orthodox
- Orthodox Union
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