Math.
(between two numbers a and b ) a number x for which a/x = x/b : The number 3 is a mean proportional between 1 and 9.
[ 1565-75 ]
Math.
(between two numbers a and b ) a number x for which a/x = x/b : The number 3 is a mean proportional between 1 and 9.
[ 1565-75 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012