English
intersoluble
From inter- + soluble.
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁entér ‘between’
Proto-Italic *n̥ter ‘between’
Latin inter ‘between’
English inter-
Proto-Indo-European *lewh₁- ‘to cut off, release’
…
Latin solvō ‘to loosen’
Late Latin solūbilis ‘that may be loosed or taken apart, dissolvable’
Old French soluble
Middle English soluble
English soluble
Today it means
adj Each soluble within the other.
Language periods are conventional ranges, not dates for this word.
Etymograph / intersoluble