Meaning
The kanji 院 carries the core meaning of a large, enclosed institution or establishment — most commonly translated as institution, temple, hospital, or palace. In modern Japanese, it functions primarily as a suffix attached to the names of major organizations and facilities: hospitals, academies, parliamentary chambers, and Buddhist temples all bear this character in their names.
Structurally, 院 is composed of two parts. On the left stands 阝 (こざとへん), the radical derived from 阜, which depicts a mound or earthen embankment — historically evoking elevated, walled enclosures. On the right is 完 (kan), meaning complete or perfect. Together, the components suggest a fully enclosed, complete compound set upon elevated ground: a place of authority, permanence, and institutional significance.
This kanji is taught in Grade 3 of Japanese elementary school and is written in 10 strokes. Its JLPT classification is N4, meaning it is essential vocabulary for intermediate learners. Because 院 appears in some of the most common Japanese nouns — particularly 病院 (hospital) — recognizing and reading it correctly is a practical necessity in everyday life.
The conceptual range of 院 spans the sacred and the civic: Buddhist temples (寺院), legislative chambers (参議院), graduate schools (大学院), and beauty salons (美容院) all share this character, unified by the idea of a purpose-built, enclosed establishment of some standing.
Readings
On'yomi (音読み) — Chinese-derived readings
院 has a single on'yomi reading: イン (in). This reading is borrowed from the Middle Chinese pronunciation and is by far the most common way to read this kanji in modern Japanese. It appears almost exclusively in compound words (jukugo) rather than standing alone. Because nearly all important vocabulary using 院 is compound-based, mastering the イン reading unlocks a wide range of useful nouns.
- 病院 (byōin) — hospital
- 大学院 (daigakuin) — graduate school
- 美容院 (biyōin) — beauty salon, hair salon
Kun'yomi (訓読み) — Native Japanese readings
院 has no standard kun'yomi reading in modern Japanese. Unlike many kanji that carry both a Chinese-derived on'yomi and a native Japanese kun'yomi, 院 is used exclusively through its on'yomi イン. This is characteristic of kanji that were introduced to Japan specifically to name institutional concepts that did not have pre-existing native Japanese words. Learners can therefore focus entirely on the single on'yomi reading without needing to memorize multiple pronunciation patterns.
Common Words & Compounds
Because 院 is a suffix-type kanji, it combines with a wide variety of preceding elements to name specific types of institutions. Below are the most important and frequently encountered compound words, organized thematically.
Medical & Health
- 病院 (byōin) — hospital; the most essential compound using 院
- 入院 (nyūin) — hospitalization, being admitted to a hospital
- 退院 (taiin) — discharge from a hospital
- 通院 (tsūin) — visiting a hospital regularly as an outpatient
Education
- 大学院 (daigakuin) — graduate school, postgraduate school
- 学院 (gakuin) — academy, private school or institute
- 院生 (insei) — graduate student
Government & Politics
- 衆議院 (Shūgiin) — House of Representatives (lower house of the Japanese Diet)
- 参議院 (Sangiin) — House of Councillors (upper house of the Japanese Diet)
- 議院 (giin) — parliamentary chamber
Religion & Culture
- 寺院 (jiin) — Buddhist temple
- 美容院 (biyōin) — beauty salon, hair salon
- 院長 (inchō) — director or head of an institution (hospital director, school director)
Example Sentences
この町には大きな病院があります。
Kono machi ni wa ōkina byōin ga arimasu.
There is a large hospital in this town.
父は先週入院しました。
Chichi wa senshū nyūin shimashita.
My father was hospitalized last week.
彼女は来月退院できる予定です。
Kanojo wa raigetsu taiin dekiru yotei desu.
She is scheduled to be discharged from the hospital next month.
兄は東京大学の大学院で研究しています。
Ani wa Tōkyō Daigaku no daigakuin de kenkyū shite imasu.
My older brother is doing research at the University of Tokyo's graduate school.
この寺院は千年以上の歴史を持っています。
Kono jiin wa sen-nen ijō no rekishi wo motte imasu.
This Buddhist temple has a history of over a thousand years.
院長先生は毎朝早く来ます。
Inchō-sensei wa mai asa hayaku kimasu.
The hospital director arrives early every morning.
母は週に一度病院に通院しています。
Haha wa shū ni ichido byōin ni tsūin shite imasu.
My mother visits the hospital as an outpatient once a week.
衆議院では新しい法律について議論しています。
Shūgiin de wa atarashii hōritsu ni tsuite giron shite imasu.
The House of Representatives is debating a new law.
彼は大学院を卒業してから会社に入りました。
Kare wa daigakuin wo sotsugyō shite kara kaisha ni hairimashita.
He joined the company after graduating from graduate school.
Related Kanji
- 薬 — Medicine, Drug (Kanji N4)
- 館 — Hall, Public Building, Mansion (Kanji N4)
- 度 — Degree, Time, Occurrence (Kanji N4)
- 所 — Place / Spot / Aspect (Kanji N4)
- 銀 — Silver (Kanji N4)
- 弟 — Younger Brother, Junior (Kanji N4)
Memory Tip
To remember 院, picture a grand walled compound (阝 = earthen walls, embankment) that is perfectly complete (完) in every way — fully staffed, fully equipped, fully enclosed. This is the image of a great institution: whether a hospital bustling with doctors, a parliament debating laws, or an ancient temple standing on elevated ground. Every time you see 院, think: "This is a complete, walled establishment of importance." The connection to 病院 (hospital) is the most practical anchor — once you have linked 院 firmly to "hospital," its institutional meaning becomes easy to extend to graduate schools, temples, and legislative chambers.