agglutination

The story

1. Frenchagglutination
2. Proto-Indo-European*h₂éd
3. Proto-Italic*ad
4. Proto-Italic*ad-
5. Latinad-
6. Proto-Indo-European*gleyH-
7. Proto-Indo-European*glóh₁ytn̥
8. Proto-Italic*gloiten
9. Latinglūten
10. Latinglūtinō
11. Latinagglūtinō
12. New Latinagglutinatio
13. English todayagglutination

Multiple origins. The oldest usage, in relation to tissues adhering or healing in medical contexts, appears in the 16th century, from French agglutination. The linguistic sense derived from this usage during the early 19th century. The sense of gluing or cementing objects together in other contexts is from New Latin agglutinatio, from Latin agglūtinō (“glue; fasten to”) + -iō (a suffix used to form nouns). Compare Spanish aglutinación (“uniting; (linguistic) agglutination”), French agglutiner (“to paste together”, verb), and German Agglutination (“(linguistic) agglutination”) and Agglutinierung (“(biological) adhering, clumping”).