amidogen

[ uh-mee-duh-juh n, -jen, uh-mid-uh- ]
/ əˈmi də dʒən, -ˌdʒɛn, əˈmɪd ə- /

noun Chemistry.

(formerly) the −NH2 group.

Origin of amidogen

First recorded in 1840–50; amido- + -gen