The story
- Proto-Indo-European*ḱe?
- Proto-Indo-European*ḱóm
- Proto-Italic*kom
- Proto-Italic*kom-
- Latincon-
- Proto-Indo-European*stel-der.?
- Proto-Italic*s(t)lokos
- Old Latinstlocus
- Latinlocus
- Latinlocō
- Latincollocō
- Latincollocātiō
- English todaycollocation
Learned borrowing from Latin collocātiō (“a putting together”). By surface analysis, col- (“together”) + location. The technical sense in linguistics was established in 1951, although it may actually be earlier. First attested in 1605.
Etymology from Wiktionary, CC BY-SA 4.0.