A synthetic derivative of morphine, with analgesic potency about 10 times that of morphine. ... Synonym: dihydromorphinone hydrochloride. ... (05 Mar 2000) ... 
Type: Term Pronunciation: hī′drō-mōr′fōn hī′drō-klōr′īd Definitions: 1. A synthetic derivative of morphine, with analgesic potency about 10 times that of morphine.
Hydromorphone hydrochloride (Dilaudid) is a drug used in medicine for the relief of moderate to severe pain. It is injected, orally ingested or inserted rectally, and causes respiratory depression and blocks pain messages to the brain as well as causing miosis.
[n] - a narcotic analgesic (trade name Dilaudid) used to treat moderate to severe pain
hydromorphone noun a narcotic analgesic (trade name Dilaudid) used to treat moderate to severe pain