光斑

guāngbān
facula (astronomy)

CEDICT

astronomy

Entry Composition

1 光 guāng
  1. bright; shiny
  2. only; merely
  3. used up; finished
  4. to leave (a part of the body) uncovered

classifier: 道
2 斑 bān
  1. spot
  2. colored patch
  3. stripe
  4. spotted
  5. striped
  6. variegated