Sien-Tchan (also spelled Sien-Tchang, Tsien-Tchan or Sien-chan) is a word found in the Stanzas of Dzyan said to come from the Chinese language. According to H. P. Blavatsky, the term refers to "our universe" and "the universe of form and matter."
It has been difficult to identify any of the spellings with known Chinese words. David Reigle suggests that this term may be related to the Tibetan སེམས་ཅན (sems-can, a sentient being, or animated beings). However, Jon Fergus proposes that sien-tchan refers to the Chinese 天下 (tiānxià), which means "all that is under heaven" and philosophically/metaphysically signifies the manifested universe.
- The Orthography of Sien-Tchan by Ingmar de Boer
- Helena Petrovna Blavatsky, The Secret Doctrine vol. I, (Wheaton, IL: Theosophical Publishing House, 1993), 136.
- Helena Petrovna Blavatsky, The Theosophical Glossary (Krotona, CA: Theosophical Publishing House, 1973), 345.
- David Reigle, Blavatsky's Secret Books (San Diego, CA: Wizards Bookshelf, 1999), 64
- Personal communication on Jan 17, 2020.