出典:Wiktionary
出典:『Wiktionary』 (2008/04/20 18:42 UTC 版)
From great- + grandparent.
Additional instances of "great-" can be prepended to the term, each indicating one further generation of ancestry. For large numbers of generations a number can be substituted, for example, "fourth great-grandparent", "four-greats grandparent" or "four-times-great-grandparent".