The possessive noun is exhibitor's.
The possessive form of the word "dictionary" is "dictionary's."
The singular possessive form is word's, for example the word's definition.
possessive form for the word holders: holders'
The possessive form of the word fairy is fairy's.
possessive form of the word glass: glass'
possessive form of the word Cathi: Cathi's
The possessive form of the word "month" is "month's."
possessive form of the word Congress: Congress'
the possessive form of the word Cathie: Cathie's
The possessive form is weaver's.
The possessive form is Lindbergh's.