Term: nitrification: the oxidation of ammonium compounds in dead organic material into nitrates and nitrites by soil bacteria (making nitrogen available to plants)
Candidate hypernym: oxidation: the process of oxidizing; the addition of oxygen to a compound with a loss of electrons; always occurs accompanied by reduction → 1
Candidate hypernym: plant cell: a cell that is a structural and functional unit of a plant → 0
Candidate hypernym: womanhood: women as a class → 0
Candidate hypernym: pleurocarp: a moss having the archegonium or antheridium on a short side branch rather than the main stalk → 0
Candidate hypernym: catalog: a complete list of things; usually arranged systematically → 0
Candidate hypernym: clutch: a pedal or lever that engages or disengages a rotating shaft and a driving mechanism → 0
Candidate hypernym: pyrostat: a thermostat that operates at very high temperatures → 0
Candidate hypernym: shoestring catch: (baseball) a running catch made near the ground → 0
Candidate hypernym: auto limitation: social control achieved as a manifestation of self-will or general consent → 0
Candidate hypernym: end: a final state → 0
Candidate hypernym: coregonidae: soft-finned fishes comprising the freshwater whitefishes; formerly included in the family Salmonidae → 0