Dictionary.com
Thesaurus.com

adherend

American  
[ad-heer-uhnd, -her-, ad-hi-rend] / ædˈhɪər ənd, -ˈhɛr-, ˌæd hɪˈrɛnd /

noun

Chemistry.
  1. any substance bonded to another by an adhesive.


Etymology

Origin of adherend

1945–50; adhere + -end (< Latin -endum gerund suffix)