English
intervessel
From inter- + vessel.
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁entér ‘between’
Proto-Italic *n̥ter ‘between’
Latin inter ‘between’
English inter-
Proto-Italic *wāss ‘container, vessel’
Late Latin vās ‘vase, vessel’
Late Latin vāscellum ‘a small vase or urn’
Old French vaissel
Middle English vessel ‘small container’
English vessel
Today it means
adj Between vessels
Language periods are conventional ranges, not dates for this word.
Etymograph / intervessel