agglutination (n.) Look up agglutination at
1540s, "act of uniting by glue," from Latin agglutinationem (nominative agglutinatio), noun of action from past participle stem of agglutinare "fasten with glue, stick on," from ad "to" (see ad-) + glutinare "to glue," from gluten "glue," from PIE *glei- "clay," also forming words with a sense of "to stick together" (see clay). Use in philology is from mid-17c.