posterity

[ po-ster-i-tee ]
/ pɒˈstɛr ɪ ti /

noun

succeeding or future generations collectively: Judgment of this age must be left to posterity.
all descendants of one person: His fortune was gradually dissipated by his posterity.

Origin of posterity

1350–1400; Middle English posterite < Latin posteritās, noun derivative of posterus coming after. See posterior, -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for posterity

posterity

/ (pɒˈstɛrɪtɪ) /

noun

future or succeeding generations
all of one's descendants

Word Origin for posterity

C14: from French postérité, from Latin posteritās future generations, from posterus coming after, from post after
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012