Question

What does the suffix in the word nitrogenous mean?

Answer 1

It means that the compound contains nitrogen, or bears nitrogen.........

Explanation:

.......typically, it contains nitrogen in a usable form. And when we use the term for say `"nitrogenous fertilizers"`, we indicate the presence of nitrogen containing salts, e.g. `"nitrate"` or `"ammonium"` salts, i.e. `NO_3^-` and `NH_4^+` salts respectively, which are in a usable form to form proteins.