economic (adj.) Look up economic at Dictionary.com
1590s, "pertaining to management of a household," perhaps shortened from economical or from French économique or directly from Latin oeconomicus "of domestic economy," from Greek oikonomikos "practiced in the management of a household or family," hence, "frugal, thrifty," from oikonomia (see economy (n.)). Meaning "relating to the science of economics" is from 1835 and now is the main sense, economical retaining the older one of "characterized by thrift."