English
intersystem
From inter- + system.
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁entér ‘between’
Proto-Italic *n̥ter ‘between’
Latin inter ‘between’
English inter-
Proto-Indo-European *steh₂- ‘to stand (up)’
…
Ancient Greek συνίστημι ‘to combine, organize’
Ancient Greek σύστημα ‘musical scale; organized body; whole made of…’
Late Latin systēma ‘harmony; musical scale; system’
Middle French systeme
English system
Today it means
adj Between systems.
Language periods are conventional ranges, not dates for this word.
Etymograph / intersystem