
1) Buddhism 2) Tibetan buddhism 3) Tibetan Buddhist practice 4) Tibetan religion
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https://www.crosswordclues.com/clue/lamaism

• (n.) A modified form of Buddhism which prevails in Thibet, Mongolia, and some adjacent parts of Asia; -- so called from the name of its priests. See 2d Lama.
Found on
http://thinkexist.com/dictionary/meaning/lamaism/

Esoteric/Tantric school of Buddhism associated with Tibet, Mongolia and northern Nepal. Read more about the Lama Temple
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http://www.beijing-visitor.com/beijing-culture/china-glossary
La'ma·ism noun A modified form of Buddhism which prevails in Thibet, Mongolia, and some adjacent parts of Asia; -- so called from the name of its priests. See 2d
Lama .
Found on
http://www.encyclo.co.uk/webster/L/7

[
n] - Tibetan Buddhism having great variety in its ritual practices and a complex hierarchical organization 2. [n] - Tibetan Buddhist doctrine including non-Buddhist Indian elements and elements of preexisting shamanism
Found on
http://www.webdictionary.co.uk/definition.php?query=Lamaism
Tibetan Buddhism noun a Buddhist doctrine that includes elements from India that are not Buddhist and elements of preexisting shamanism
Found on
https://www.encyclo.co.uk/local/20974

(from Tibetan b La-ma, honorable title of a monk) The religious beliefs and institutions of Tibet, derived from Mahayana Buddhism (q.v.) which was first introduced in the 7th century by the chieftain Sron-tsan-gampo, superimposed on the native Shamaistic Bon religion, resuscitated and mixed with Tantric (q.v.) elements by the mythic Hindu Padmasam....
Found on
https://www.encyclo.co.uk/local/21203

Tibetan Buddhism, became the state religion of Mongolia in 1586.
Found on
https://www.photius.com/countries/mongolia/glossary/index.html
No exact match found.