descendant

de|scend|ant /dɪs'endənt/ (descendants)
1 [N-COUNT] usu pl, usu with poss
Someone's descendants are the people in later generations who are related to them.
They are descendants of the original English and Scottish settlers.
ancestor
2 [N-COUNT] usu N of n
Something modern which developed from an older thing can be called a descendant of it.
His design was a descendant of a 1956 device...
ancestor