Second-largest branch of the second-largest religion (4)

I believe the answer is:

shia

(Other definitions for shia that I've seen before include "A main branch of Islam" , "A major denomination of Islam" , "One of the two main branches of orthodox Islam" , "A_main branch of Islam" .)

I've seen this clue in The Wall Street Journal and the LA Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.