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English definition of “economical”

economical

adjective     /ˌiː.kəˈnɒm.ɪ.kəl/ /ek.ə-/ US  /-ˈnɑː.mɪ-/
B2 not using a lot of fuel, money, etc.: There's increasing demand for cars which are more economical on fuel. What's the most economical way of heating this building?Costing or worth little or no moneyBudgeting and saving money Grammar:Economic or economical?Economic and economical are adjectives.See more
(Definition of economical adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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