What does dormitory mean?
A dormitory is a building — or, in older British usage, a single large room — where people sleep, most commonly students living on a college or university campus. The word derives from the Latin dormitorium, literally 'a place for sleeping,' and entered English in the early seventeenth century. In North America, a dormitory (informally shortened to 'dorm') typically means the whole residential building housing many student rooms along with shared kitchens, lounges, and bathrooms; institutions often favour the more formal label 'residence hall.' In Britain, the equivalent building is usually called a 'hall of residence,' leaving 'dormitory' to describe the communal sleeping rooms found in boarding schools, hostels, and religious houses. The word also survives in the fixed phrase 'dormitory town' or 'dormitory suburb,' describing a residential community whose inhabitants commute elsewhere for work. Connotations are generally neutral and institutional, evoking student life, shared living, and youthful independence.
A building or group of buildings providing sleeping accommodation, especially for students at a college or university; in British English, also a large room with multiple beds in an institution such as a boarding school.
"The new dormitory will house four hundred undergraduates when it opens in September."
In American English, shortened to 'dorm'; in British English, 'hall of residence' is preferred for the whole building.
(Attributive) Relating to or designating a residential area whose inhabitants commute to work elsewhere, as in 'dormitory town' or 'dormitory suburb'.
"Many commuters live in dormitory towns outside the capital and travel in by rail each morning."
Used only attributively in this sense.
The standard plural follows the regular -y → -ies pattern. Informally, 'dorms' is common in American English.
"All first-year students live in university-owned dormitories."
The word dormitory comes straight from Latin dormitorium, meaning 'a place for sleeping' — so every time you say 'dorm,' you're speaking Latin.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of dormitory
Dormitory comes from the Latin dormitorium, meaning 'sleeping place,' formed from dormire ('to sleep') plus the suffix -torium denoting a place associated with an activity. The word was adopted into English in the early seventeenth century, initially describing sleeping quarters in monasteries, boarding schools, and other institutions before becoming strongly associated with university accommodation. It shares its root with words such as dormant, dormer, and dormouse, all ultimately tracing back to the same Latin verb for sleep.
How dormitory is actually used
In American English, dormitory is often shortened informally to 'dorm,' though universities increasingly prefer the more formal terms 'residence hall' or 'hall of residence.' In British English, the word more commonly refers to the individual sleeping room rather than the entire building; the equivalent building is called a 'hall of residence.' The attributive sense in 'dormitory town' or 'dormitory suburb' is well established on both sides of the Atlantic.
Easily confused with dormitory
Dormant is an adjective meaning inactive or asleep (as in 'a dormant volcano'), while dormitory is a noun referring to a place where people sleep.