ec·o·nom·ic 
(ĕk′ə-nŏmĭk, ē′kə-)
(ĕk′ə-nŏmĭk, ē′kə-)adj.
1.
a. Of or relating to the production, development, and management of material wealth, as of a country, household, or business enterprise.
b. Of or relating to an economy: a period of sustained economic growth.
2. Of or relating to the science of economics: new economic theories regarding the effects of deficit spending.
3. Of or relating to the practical necessities of life; material: wrote the book primarily for economic reasons.
4.
a. Financially rewarding; economical: It was no longer economic to keep the manufacturing facilities open.
b. Efficient; economical: an economic use of home heating oil.