noun, noun which may take the genitive case particle 'no'
half-open; partly open
Describes something that is not fully closed or not fully open, such as a door, window, or eyes.
ドアが半開になっている。
The door is half-open.
彼は半開の目でこちらを見ていた。
He was looking this way with his eyes partly open.
noun, noun or participle which takes 'suru', noun which may take the genitive case particle 'no'
semicivilized; half-civilized
Rare, dated term used in historical or anthropological contexts to describe a society or people considered only partly civilized. Often carries a colonial-era perspective and is now generally avoided.
19世紀の文献では、その地域は半開の地と記されていた。
In 19th-century documents, that region was described as a semicivilized land.