stepgrandfather

As a noun stepgrandfather is

the stepfather of one's mother or father.

As nouns the difference between taxonomy and stepgrandfather

is that taxonomy is the science or the technique used to make a classification while stepgrandfather is the stepfather of one's mother or father.

As nouns the difference between stepmother and stepgrandfather

is that stepmother is the wife of one's biological father, other than one's biological mother while stepgrandfather is the stepfather of one's mother or father.

As nouns the difference between stepfather and stepgrandfather

is that stepfather is the husband of one's biological mother, other than one's biological father, especially following the divorce or death of the father while stepgrandfather is the stepfather of one's mother or father.

Stepgrandfather is a related term of stepgrandson.

As nouns the difference between stepgrandfather and stepgrandson

is that stepgrandfather is the stepfather of one's mother or father while stepgrandson is the son of one's stepchild, or the stepson of one's child.

Stepgrandfather is a related term of stepgrandmother.

As nouns the difference between stepgrandfather and stepgrandmother

is that stepgrandfather is the stepfather of one's mother or father while stepgrandmother is the stepmother of one's mother or father.