WordReference Random House Unabridged Dictionary of American English © 2026
de•ni•tri•fy
(dē nī′trə fī′),USA pronunciation v.t., -fied, -fy•ing. [Chem.]
de•ni′tri•fi•ca′tion, n.
de•ni′tri•fi′er, de•ni′tri•fi•ca′tor, n.
- Chemistryto remove nitrogen or nitrogen compounds from.
- Chemistryto reduce (nitrates) to nitrites, ammonia, and free nitrogen, as in soil by microorganisms.
- de- + nitrify 1890–95
de•ni′tri•fi′er, de•ni′tri•fi•ca′tor, n.