1. 
   Triodion
   The Triodion (Τριῴδιον, Triōdion; Slavonic: Постнаѧ Трїωдь, Postnaya Triod; Triodul, Albanian: Triod/Triodi), also called the Lenten Triodion (Τριῴδιον κατανυκτικόν, Triodion katanyktikon), is the liturgical book used by the Eastern Orthodox and Eastern C...
   Found op http://en.wikipedia.org/wiki/Triodion
   
   
2. 
   Triodion
   (from the article `church year`) The principal cycle consists of (1) 10 weeks before Easter, contained in the Tridion (pre-Easter liturgical service book); the first four of these ... ...Resurrection; it includes the period of Great Fast (Lent), preceded by three Sundays of preparation and the perio...
   Found op http://www.britannica.com/eb/a-z/t/81
   
   

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