The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Proto-Indo-European*gel-
- Latinglomus
- Latinglomerō
- Latinagglomerō
- Latinagglomerātus
- English todayagglomerate
From Latin agglomerātus, past participle of agglomerō (“to wind into a ball”), from ad- (“to”) + glomerō (“to wind into a ball”), from glomus (“a ball”), akin to globus (“a ball”).
Etymology from Wiktionary, CC BY-SA 4.0.