As used in this chapter, the term:(1) “Grandparent” shall include great-grandparent.
(2) “Missing” means having whereabouts which are unknown for a period of at least 90 days and not being able to be located after a diligent search and inquiry. Such search and inquiry for a missing person must include, at a minimum, inquiries of all relatives of the person who can reasonably be identified by the petitioner, inquiries of hospitals in the areas where the person last resided, inquiries of the person’s recent employers, inquiries of state and federal agencies likely to have information about the person, inquiries of appropriate utility and postal providers, a thorough search of at least one electronic database specifically designed for locating persons, and inquiries of appropriate law enforcement agencies.
(3) “Persistent vegetative state” has the same meaning as provided in s. 765.101(15). 
