the oxidation of ammonium compounds in dead organic material into nitrates and nitrites by soil bacteria (making nitrogen available to plants) | (botany) a living organism lacking the power of locomotion |
the chemical process in which a nitro group is added to an organic compound (or substituted for another group in an organic compound) | buildings for carrying on industrial labor |
| something planted secretly for discovery by another |
| an actor situated in the audience whose acting is rehearsed but seems spontaneous to the audience |