ecologic C2+

/ˌikəˈlɑdʒɪk/ relating to ecology or the relationship of organisms to their environment M S

ecumenical C2+

/ˌɛkjəˈmɛnɪkəl/ promoting unity among Christian churches; universal in scope M S

economically C2+

/ˌikəˈnɑmɪkli/ in a way relating to the economy or to thrift M S

economizer C2+

/ɪˈkɑnəˌmaɪzɚ/ a device that saves energy or fuel, especially in a boiler M S