lubrication

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the condition of having been made smooth or slippery by the application of a lubricant
• Derivationally related forms:
lubricate
• Hypernyms:
condition, status
2. an application of a lubricant to something
• Derivationally related forms:
lubricate
• Hypernyms:
application, coating, covering