Hapax legomenon

According to Wikipedia, a "hapax legomenon (pl. hapax legomena, though sometimes called hapaxes for short) is a word which occurs only once in the written record of a language, in the works of an author, or in a single text. If a word is used twice it is a dis legomenon, thrice, a tris legomenon." It is a "word or form that occurs only once in the recorded corpus of a given language." Hapax legomenon, in Biblical discussions, means the word appears only once in the New Testament (though this is Greek word, it's usage could apply to the Old Testament).