Reduced in rank; deprived of an office or a dignity.Lowered in character or value; debased; low.In biology, reduced in taxonomic rank, or in complexity of structure or function; brought to or being in a state of degradation.In heraldry, placed upon steps. Also degreed.In geology, worn down; leveled by erosion.In thermodynamics, reduced to a form less available for further transformation: said of energy which as the result of transformations has been converted into heat.