Japanese

Noun

疱瘡 ‎(hiragana いもがさ, romaji imogasa)

1. an infectious disease caused by both the Variola major and Variola minor viruses; smallpox
   • circa 1177-1188, Iroha Jiruishō

     皰瘡 イモカサ モカサ

Synonyms

• 痘瘡 (もがさ) ‎(mogasa)
• 天然痘 (てんねんとう) ‎(tennentō)

Etymology 2

/pausau/ → /ɸausau/ → /ɸɔːsɔː/ → /hoːsoː/.

Noun

疱瘡 ‎(hiragana ほうそう, romaji hōsō, historical hiragana はうさう)

1. an infectious disease caused by both the Variola major and Variola minor viruses; smallpox

Synonyms

• 痘瘡 (もがさ) ‎(mogasa)
• 天然痘 (てんねんとう) ‎(tennentō)

Derived terms

• 水疱瘡 (みずぼうそう) ‎(mizubōsō)

References

• Tadakane, Tachibana; Atsuo Masamune (ed.) (circa 1177-1188) Iroha Jiruishō (in Japanese), Kazama Shobō, published 1971