Math.
an element that when added to a given element in a specified set leaves that element unchanged, as zero in the real-number system.
[ 1955-60 ]
Math.
an element that when added to a given element in a specified set leaves that element unchanged, as zero in the real-number system.
[ 1955-60 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012