substituent

noun

sub·​stit·​u·​ent səb-ˈsti-chə-wənt 

-ˈstich-wənt

: an atom or group that replaces another atom or group in a molecule

substituent adjective

Word History

Etymology

Latin substituent-, substituens, present participle of substituere

First Known Use

circa 1896, in the meaning defined above

Medical Definition

substituent

noun

sub·​stit·​u·​ent səb-ˈstich-(ə-)wənt 

: an atom or group that replaces another atom or group in a molecule

substituent adjective