great grandmother

1. 1.

   a mother of your grandparent

   Broadergreat grandparent

Questions about great grandmother

What does great grandmother mean?

great grandmother means "a mother of your grandparent".

Is great grandmother a common word?

great grandmother is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.