Agglutination

noun

1. The act or process of agglutinating; adhesion of distinct parts.
2. A clumped mass of material formed by agglutination.
3. The clumping together of red blood cells or bacteria, usually in response to a particular antibody.
4. The formation of words from morphemes that retain their original forms and meanings with little change during the combination process.
5. The act of uniting by glue or other tenacious substance; the state of being thus united; adhesion of parts; that which is united; a mass or group cemented together.