Nineteen states voted in the elections of 1816. - On dokuz devlet 1816 seçimlerinde oy kullandı.
I have been smoking since I was nineteen. - On dokuz yaşımdan beri sigara içiyorum.
The cardinal number occurring after eighteen and before twenty, represented in Roman numerals as XIX and in Arabic numerals as 19. It is the last/largest of the "teens"
[ 'on, 'än ] (preposition.) before 12th century. Middle English an, on, preposition & adverb, from Old English; akin to Old High German ana on, Greek ana up, on.