chemisorption

noun

che·​mi·​sorp·​tion ˌkem-i-ˈsȯrp-shən, ˌkē-mi-, -ˈzȯrp- 

: the usually irreversible process of the atoms in a surface (as of a solid) forming chemical bonds with molecules that come in contact with them

chemisorption of gaseous nitrogen on iron catalysts

chemisorb

ˈkem-i-ˌsȯ(ə)rb  ˈkē-mi- 

-ˈzȯ(ə)rb

transitive verb