IN PICS: This Indian-American Boy Won 91th Spelling Bee Championship

19 of the past 23 winners have had Indian heritage. (AP Image)

Karthik is the 14th consecutive Indian-American champion. (AP Image)

During the competition, Karthik said there were eight or nine words during the prime-time finals he didn't know. (AP Image)

Karthik is from McKinney, Texas. (AP Image)

He defeated the Bee's largest ever pool of competitors after 515 spellers took the national stage beginning Tuesday for three days of spellbinding competition. (AP Image)

His winning word was "koinonia," which means Christian fellowship or communion. (AP Image)

Karthik had to spell two words correctly to seal the title, which he did with ease. (AP Image

Karthik faced off with Naysa Modi, 12, of Dallas, Texas, in an engrossing finale. (AP Image)

This happened when 12-year-old Naysa Modi misspelled the word "Bewusstseinslage" in the first championship round. (AP Image)

Karthik Nemmani , a 14-year-old Indian-American boy, wins the Scripps National Spelling Bee by correctly spelling "koinonia". (AP Image)