Yes, the form grandparents' is the plural possessive form, a word that indicates that something in the sentence belongs to two or more grandparents.
The singular possessive form is grandparent's.
Examples:
Both of my grandparents' jobs are in the medical field. (plural)
One of my grandparent's job is in the medical field. (singular)
The possessive form of the plural noun grandparents is grandparents'.Example: My grandparents' anniversary party is this weekend.
The plural possessive form of "grandparents" is "grandparents'."
The possessive noun form of "grandparents" is "grandparents'".
Singular; Grandchild Singular possessive ; Grandchild's Plural ; Grandchildren Plural possessive ; Grandchildren's
The plural form for the noun grandmother is grandmothers. The plural possessive form is grandmothers'.
The possessive form of the plural noun grandparents is grandparents'.Example: My grandparents' anniversary party is this weekend.
The plural possessive form of "grandparents" is "grandparents'."
The possessive noun form of "grandparents" is "grandparents'".
The possessive form for the plural noun wives is wives'.
The plural possessive noun of molecules is molecules' .
The plural form for the noun buzz is buzzes; the plural possessive form is buzzes'.
The plural possessive noun for "vowel" is "vowels'".
The word sisters is the plural form; the plural possessive is sisters'.
The plural form for the noun tree is trees.The plural possessive form is trees'.
The noun "branch" is a regular plural noun, a noun that forms its plural by adding "s" or "es". The plural form of branch is "branches".The plural possessive form is branches', a regular plural possessive.
pLURAL ; orbits Possessive plural ; Orbits' (NB note the position of the apostrophe).
The plural possessive noun is racers'.