星せい雲うん

せ

い

う

ん

Freq.FrequencyTop 50,000

Meanings

1

noun

nebula

astronomy

Modern astronomical term for a cloud of gas and dust in space.

オリオン星せい雲うんは肉にく眼がんでも見みえる。

The Orion Nebula is visible even to the naked eye.

2

noun

galaxy (obsolete)

obsolete termastronomy

Obsolete astronomical term for a galaxy; now replaced by 銀河. This usage is historical and not used in modern Japanese.

Etymology

Compound of 星 (star) and 雲 (cloud), literally 'star cloud'. The term originally encompassed both nebulae and galaxies before modern astronomical classification.