bisabuela
great-grandmother
bis-
twice, double
+
abuela
grandmother
Bisabuela means great-grandmother and can be thought of as bis-0 (twice, double0) + abuela1 (grandmother1), literally a 'double grandmother'.
noun
- great-grandmotherGreat-grandmotherMi bisabuela tiene 95 años. // My great-grandmother is 95 years old.