Yannai
(3rd cent. CE)
. Jewish amora. Yannai was of priestly descent and a pupil of R.
![](/files/02/59/75/f025975/public/00011.jpg)
iyya. Yannai established an academy, and his rulings are frequently quoted in the
Talmud
.
Yantra
(Skt., ‘instrument for supporting’). A geometrical design representing the cosmos used in Hindu liturgy (
p
j
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) and meditation (
dhy
na
), especially in
Tantrism
. Though akin to
ma
![](/files/02/59/75/f025975/public/00026.jpg)
ala
, yantra differs in that it can be a three-dimensional object of worship made of stone or metal plates. Like ma
![](/files/02/59/75/f025975/public/00026.jpg)
![](/files/02/59/75/f025975/public/00019.jpg)
ala, the yantra is a symbol of cosmogonic development from the absolute in the centre to the material world at the outer edges, and like ma
![](/files/02/59/75/f025975/public/00026.jpg)
![](/files/02/59/75/f025975/public/00019.jpg)
ala is the visual equivalent of
mantra
. Yantras often have a seed (
b
ja
) mantra inscribed upon them. In Tantric p
![](/files/02/59/75/f025975/public/00005.jpg)
j
![](/files/02/59/75/f025975/public/00006.jpg)
, the yantra, if made of stone or metal, is invested with power and meditated upon as the deity. The most famous yantra is the
r
yantra