facula

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a bright spot on a planet
• Hypernyms:
spot, speckle, dapple, patch, fleck, maculation
2. a large bright spot on the sun's photosphere occurring most frequently in the vicinity of sunspots
• Hypernyms:
spot, speckle, dapple, patch, fleck, maculation