agglutinative (adj.)

"having the power or tendency to unite or adhere," 1630s, originally in a medical sense, from Latin agglutinat-, past participle stem of agglutinare "stick on, fasten with glue," 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). Philological sense is from 1650s.