English
interjoist
From inter- + joist.
Proto-Indo-European *h₁én ‘in’
Proto-Indo-European *h₁entér ‘between’
Proto-Italic *n̥ter ‘between’
Latin inter ‘between’
English inter-
Proto-Indo-European *(H)yeh₁- ‘to throw’
…
Latin iaciō ‘to throw’
Latin iaceo ‘to lie prostrate, lie down’
Old French gesir ‘to lie down’
Old French giste ‘resting-place’
English joist
Today it means
noun The space or interval between two joists.
Language periods are conventional ranges, not dates for this word.
Etymograph / interjoist