Definition of: nitrify

(nī′trə·fī) v.t. ·fied, ·fy·ing Chem.
1. To combine with nitrogen.
2. To convert, by oxidation, into nitric or nitrous acid or into nitrates or nitrites.
3. To treat or impregnate (soil, etc.) with nitrates. [<F nitrifier]
—ni′tri·fi′a·ble adjective