Dictionary.com
Thesaurus.com

nonnitrogenous

American  
[non-nahy-troj-uh-nuhs] / ˌnɒn naɪˈtrɒdʒ ə nəs /

adjective

  1. containing no nitrogen.


Etymology

Origin of nonnitrogenous

First recorded in 1870–75; non- + nitrogenous