summable

[ suhm-uh-buhl ]

adjective

, Mathematics.

1. capable of being added.
2. (of an infinite series, especially a divergent one) capable of having a sum assigned to it by a method other than the usual one of taking the limit of successive partial sums.
3. (of a function) possessing a finite Lebesgue integral.

Other Words From

• summa·bili·ty noun
• un·summa·ble adjective

Word History and Origins

Origin of summable¹

First recorded in 1775–85; sum + -able