# countably additive

Also found in: Wikipedia.

## countably additive

[′kau̇nt·ə·blē ′ad·əd·iv] (mathematics)

Given a measure

*m,*and a sequence of pairwise disjoint measurable sets, the property that the measure of the union is equal to the sum of the measures of the sets.Want to thank TFD for its existence? Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content.

Link to this page: