19 19 /naɪnˈtin/

adjective

1. () Being one more than eighteen  ( xix , nineteen , 19 )
   being one more than eighteen
   

noun

1. () The cardinal number that is the sum of eighteen and one  ( XIX , 19 , nineteen )
   the cardinal number that is the sum of eighteen and one
    She is nineteen years old and in her second year of college
   She is nineteen years old and in her second year of college