a combining form that enters into compounds denoting a unit one-quintillionth (10 -18 ) the size of the unit named by the stem.
[ att ( en ) eighteen + -O- ]
a combining form that enters into compounds denoting a unit one-quintillionth (10 -18 ) the size of the unit named by the stem.
[ att ( en ) eighteen + -O- ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012