Usuli Shiism produced the politically active caste of priests that is a distinctive feature of Iranian Shiism.    From Wordnet, Princeton University. 

The name Usuli is derived from the Arabic term usul Isma'ilis (Seveners) meaning 'principle'.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

Mor kozhambu is the best combination with Usuli as this dish is already heavy with lentils.    From Wordnik.com.  [Archive 2007-06-01] Reference

Death of Vahid Bihbahani, the religious scholar responsible for the final Usuli victory over the Akhbari position in Shi'ism.    From Wordnik.com.  [1726] Reference

Bihbahani's treatises defined the Usuli Shi’ite system of jurisprudence and established the authority of mujtahids, as supreme religious authorities, to issue opinions in all matters of faith and law.    From Wordnik.com.  [1726] Reference

Marja/Marjaiyya: The highest position of authority in the Usuli school of Twelver Shi'i fiqh.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

Wahhabis in Arabia, the Sanusi in Cyrenaica. the Fulani in Nigeria, the Mahdi in the Sudan, and the victory of the Usuli "mujtahids" in Shiite Iran and Iraq.    From Wordnik.com. Reference

Preparation for Usuli.    From Wordnik.com.  [Archive 2007-06-01] Reference

Usuli Shi’ism.    From Wordnik.com.  [Subject Index Page 79] Reference