— countability, countableness , n. — countably , adv.
/kown"teuh beuhl/ , adj.
1. able to be counted.
2. Math.
a. (of a set) having a finite number of elements.
b. (of a set) having elements that form a one-to-one correspondence with the natural numbers; denumerable; enumerable.
[ 1400-50; late ME. See COUNT 1 , -ABLE ]