great-grandparentn.
/ˌɡreɪtˈɡran(d)ˌpɛːrənt/, /ˌɡreɪtˈɡran(d)ˌpɛːrn̩t/, U.S. /ˌɡreɪtˈɡræn(d)ˌpɛr(ə)nt/ A grandparent's parent, a great-grandfather or great-grandmother. Also figurative.
ΘΚΠ
society > society and the community > kinship or relationship > kinsman or relation > grandparent > [noun] > great(-great) grandparent
great-grandparent1736
1736 Read's Weekly Jrnl. 24 Jan. A Child was lately born there, who has twelve Grand and Great Grand Parents living.
1802 Brit. Critic Sept. 324 A family who have been all web-footed for some generations back, arising..from a great grand parent being scalded in both feet, when an infant.
1838 Ladies' Compan. July 131/1 My great grandparent brought it from England.
1893 New Ireland Rev. Mar. 82 ‘The Club’, founded by Burke in 1747,..the great-grandparent of all the various debating societies of which Trinity College has been such a nursing mother.
1914 Philos. Trans. (Royal Soc.) B. 205 439 Individuals [sc. cladocerans] do not resemble their parents any more closely than they do their great-grand-parents.
1952 J. H. McCulloch Border Collie Stud. ii. 3/1 Let us take the pedigree back another generation... Here it is, with the great-grandparents included.
1996 N. Maraire Zenzele xii. 186 As she would pass the small mounds of earth that marked the resting places of our great-grandparents, she would curtsey.
Derivatives
great-grandpaˈrental adj.
ΚΠ
1877 Gentleman's Mag. Oct. 430 All families outside the descendants of the four greatgrandparental families corresponding to orders of animals more distantly related than the Simiadæ to man.
1929 19th Cent. Dec. 810 A collateral relative at the level of the grandparental or great-grandparental generation.
2002 Guardian (Nexis) 6 July 27 The great-grandparental mystery at the heart of Martin's researches.
This entry has been updated (OED Third Edition, September 2013; most recently modified version published online March 2022).
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n.1736