efficiency

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the ratio of the output to the input of any system (Freq. 12)
• Hypernyms:
ratio
• Hyponyms:
figure of merit
2. skillfulness in avoiding wasted time and effort (Freq. 9)
- she did the work with great efficiency
• Ant:
inefficiency
• Derivationally related forms:
efficient
• Hypernyms:
skillfulness
• Hyponyms:
economy