gerontophilia

Etymology tree
Proto-Indo-European *ǵerh₂-
Proto-Indo-European *-onts
Proto-Indo-European *ǵérh₂onts
Proto-Hellenic *géronts
Ancient Greek γέροντος (gérontos)der.
English geronto-
Proto-Indo-European *bʰil-o-s
Ancient Greek φῐ́λος (phĭ́los)
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-i-eh₂
Proto-Hellenic *-íā
Ancient Greek -ῐ́ᾱ (-ĭ́ā)
Ancient Greek φῐλῐ́ᾱ (phĭlĭ́ā)der.
English -philia
English gerontophilia
From geronto- + -philia.