ni ‧ a ‧ cin /ˈnaɪəsən, ˈnaɪəsɪn/ BrE AmE noun [uncountable]
[ Date: 1900-2000 ; Origin: nicotine + acid + -in chemical compound ]
a type of ↑ vitamin that is good for your skin and your ↑ nervous system
ni ‧ a ‧ cin /ˈnaɪəsən, ˈnaɪəsɪn/ BrE AmE noun [uncountable]
[ Date: 1900-2000 ; Origin: nicotine + acid + -in chemical compound ]
a type of ↑ vitamin that is good for your skin and your ↑ nervous system
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012