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Definition of Efficient
1. Adjective. Being effective without wasting time or effort or expense. "Efficient engines save gas"
Similar to: Businesslike, Cost-effective, Cost-efficient, Economic, Economical, Expeditious, High-octane, Streamlined
Derivative terms: Efficiency
Antonyms: Inefficient
2. Adjective. Able to accomplish a purpose; functioning effectively. "The efficient cause of the revolution"
Definition of Efficient
1. a. Causing effects; producing results; that makes the effect to be what it is; actively operative; not inactive, slack, or incapable; characterized by energetic and useful activity; as, an efficient officer, power.
2. n. An efficient cause; a prime mover.
Definition of Efficient
1. Adjective. Making good, thorough, or careful use of resources; not consuming extra. Especially, making good use of time or energy. ¹
2. Adjective. Using a particular proportion of available energy. ¹
¹ Source: wiktionary.com
Definition of Efficient
1. [adj]
Medical Definition of Efficient
1. Serving as or characteristic of an immediate agent in the production of an event, causally productive. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)