hospitalized
adj.adj. admitted to a hospital for medical treatment. You use this to describe someone who is staying in a hospital because they are sick or injured.
adj. placed in a hospital for medical care or observation. Often functions as a participial adjective describing a patient's status; frequently follows linking verbs such as 'be' or 'remain'.
He was hospitalized for two weeks after the accident.
The elderly patient was hospitalized following a severe case of pneumonia that required intravenous antibiotics.
Although the initial symptoms appeared minor, the athlete was eventually hospitalized to undergo a series of diagnostic tests to rule out internal bleeding.
Typically follows a linking verb (predicative use) or appears as a past participle in passive constructions.
He was hospitalized in the clinicHe was hospitalized at the clinicWhile 'in the hospital' is a set phrase, when naming a specific facility, 'at' is often the preferred preposition for the location of treatment.