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Concise Oxford English Dictionary
posterity
■ noun all future generations.

ME: from OFr. posterite, from L. posteritas, from posterus ‘following’.
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Concise Oxford Thesaurus
posterity
▶ noun
their names are recorded for posterity: FUTURE GENERATIONS, the future.
(archaic) the posterity of Abraham: DESCENDANTS, heirs, successors, offspring, children, progeny; Law issue; archaic seed.
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EngMac
posterity
s. потомство; потомство
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English-Serbian dictionary
Posterity
Potomstvo-Buduci Narastaj
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Merriam-Webster Collegiate® Dictionary
pos·ter·i·ty
Pronunciation: pä-‘ster-ə-tē
Function: noun
Etymology: Middle English posterite, from Anglo-French pusterité, from Latin posteritat-, posteritas, from posterus coming after
Date: 14th century

1 : the offspring of one progenitor to the furthest generation
2 : all future generations