sharp-sightedness

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. sharpness of vision;
the visual ability to resolve fine detail (usually measured by a Snellen chart)
• Syn:
acuity, visual acuity
• Derivationally related forms:
sharp-sighted
• Hypernyms:
sight, vision, visual sense, visual modality
• Hyponyms:
twenty-twenty, 20/20, oxyopia
2. lively attentiveness
• Syn:
alertness, on the qui vive
• Derivationally related forms:
sharp-sighted, alert (for: alertness)
• Hypernyms:
attentiveness