Yadu Vamsa

The dynastie (vamsa) of the Yadus, in which Krishna was born.

Yamalarjuna Tree

Arjuna Tree – Terminalia arjuna. Yamalarjuna is a twin-tree.

Nalakubera and Manigriva were sons of Kubera. One day they got drunk and lost their temper at the sight of some apsaras. When Narada came on the way, the apsaras quickly put on something, Nalakubera and Manigriva stood naked in front of him. He cursed them to become an Arjuna twin tree (Yamalarjuna). In a hundred years Krishna would redeem them.

Yadavi

See Bahu/Bahuka.

Yogamaya

The Goddess of Illusion (Maya), Vishnu’s illusory power.

Read the story here
http://hindumythologyforgennext.blogspot.com/2017/07/little-krishna-part-10_15.html

Yajna/Yaga/Yagya

Yajna is a large-scale fire sacrifice in which numerous priests recite Vedic hymns.

The smaller version is Homa or Havan.

The term yajna can be used for all devotional offerings, services, rites. To recite a mantra (Japa) is a Japa Yajna, to pass on knowledge/wisdom (Jnana) is a Jnana Yajna.

The term is transliterated manifold.

Yagya/Yajna/Yaga

Yajna is a large-scale fire sacrifice in which numerous priests recite Vedic hymns.

The smaller version is Homa or Havan.

The term yajna can be used for all devotional offerings, services, rites. To recite a mantra (Japa) is a Japa Yajna, to pass on knowledge/wisdom (Jnana) is a Jnana Yajna.

The term is transliterated manifold.

Yogishvara

The Bhagavata Purana tells about a dialogue between King Nimi and nine Yogishvara, sons of King Rishabha.

Their names are Kavi, Hari, Antariksha, Prabuddha, Pippalayana, Avirhotra, Drumila, Chamasa, Karbhajana.

Read the dialogue here
http://sushmajee.com/bhagvatjee/kathaa/skandh11/2-janakandyogee.htm

Yajna Purusha

The essence of the sacrifice is Vishnu. In the Bhagavata Purana, Yajna Purusha is the seventh avatar.

Agni, Indra, Vayu and Yajna made a sacrifice. The four agreed that each would receive an equal share. Yajna received the first gift. He fled with it from the sacrificial site. The others followed him. But Yajna was faster, unhooked them and took a nap in a forest, resting his head on his bow.

When Agni, Indra and Vayu found him, they decided to behead him, but who should do it? They asked the ants of the forest to gnaw through the bowstring. They refused. The three offered them a share of the sacrifice. The ants gnawed the bowstring, freed from the tension of the bowstring, the bow separated Yajna’s head from the body.

The head flew into the sky and became a ball of fire, the sun. The Gods put a horse’s head on Yajna and Hayagriva was born.

Yajnadeva

The personified, deified (Deva) Yajna. Yajnadeva was the son of Ruci and Akuti.

Ruci is a mind-born son of Brahma, Akuti is the daughter of Swayambhuva Manu.

In some Puranas Yajnadeva is an Avatar of Vishnu.

Yogendras

The nine Yogendras are beings that can move freely in the universe.

Their names are Kavi, Havi, Antariksha, Prabuddha, Pippalayana, Avirhotra, Drumila, Camasa, Karabhajana.