nonnitrogenous

adjective
non·​ni·​trog·​e·​nous | \ ˌnän-nī-ˈträ-jə-nəs How to pronounce nonnitrogenous (audio) \

Definition of nonnitrogenous

: not relating to, being, or containing nitrogen : not nitrogenous nonnitrogenous fertilizers

First Known Use of nonnitrogenous

1843, in the meaning defined above

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