de·nu·mer·a·ble (dĭ-nōō'mər-ə-bəl, -nyōō'-) adj. Capable of being put into one-to-one correspondence with the positive integers; countable.
[From denumerate, to count, from Late Latin dēnumerāre, dēnumerāt-, alteration of Latin dīnumerāre : dī-, dis-, dis- + numerāre, to number; see numerate.] de·nu'mer·a·bil'i·ty n., de·nu'mer·a·bly adv.