Udaka-vaha srotas
Channels that transports water or watery liquids in the body.

Udana Vayu
One of the sub-doshas of vayu that regulates strength, speech and the elimination of carbon dioxide.

Upa-dhatu
A secondary tissue that supports the main tissue.

Upanaha Swedhana
A therapeutic application of warm, medicated poultices to treat arthritis.

Upasaya
The alleviation of disease by suitable remedies, advantageous medicine. 

Upastambha
Supporting pillars, sub- pillars.

Upyokta
User

Upyoga-samstha
using method, user manual, and instructions to use or practice a technique.

Uro Basti
An Ayurveda treatment in which medicated oils are retained on the chest and heart area to reduce congestion.

Usna
Hot, warm, passionate.

Utkleshana Basti
Therapeutic administration of medicated decoctions through the rectum to promote secretions in the colon. It liquefy and wipe out the accumalated ama (toxins) and waste material.

Uttama anga
The word is a combination of two words, the uttama means noble, great and anga that means part of the body. Thus literally the term means great body. 

Uttanapadasana
A type of Yoga posture (asana).