What does Enrchmt stand for?

Enrichment

Physical process of increasing the proportion of U-235 to U-238.  OR the addition of nitrogen, phosphorous, and carbonaceous compounds, or other nutrients into a lake or other waterway that greatly increases the growth potential for algae and other aquatic plants. Most frequently, enrichment results from the inflow of sewage effluents or from agricultural runoff. OR Ornament particularly carved or modelled decoration to a building.