also: けいこくせい
Archaic term for the planet Mars. In modern Japanese, 火星 (かせい) is used instead.
See also: 火星
火夏星 is seen in old documents as a word referring to Mars.
The modern standard word for Mars. 火夏星 and 熒惑星 are archaic synonyms.
Archaic kanji spelling for Mars; the reading ひなつぼし is associated with this form.
Archaic kanji spelling for Mars, read as けいこくせい. The reading ひなつぼし is not used with this form.
The historical derivation is uncertain. 火夏星 is an archaic Japanese name for Mars, possibly based on its reddish appearance. 熒惑星 is a Chinese-derived term meaning 'bewildering star', reflecting ancient observations of its retrograde motion.