/ dɪˈsendənt; NAmE / noun
1.
a person's descendants are their children, their children's children, and all the people who live after them who are related to them :
He was an O'Conor and a direct descendant of the last High King of Ireland.
Many of them are descendants of the original settlers.
2.
something that has developed from sth similar in the past
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WORD ORIGIN
late Middle English (as an adjective in the sense descending ): from French , present participle of descendre to descend, from Latin descendere , from de- down + scandere to climb. The noun dates from the early 17th cent.