To save this word, you'll need to log in.
hy·dro·mor·phone | \ -ˈmȯr-ˌfōn 
\
\Medical Definition of hydromorphone
: a ketone C17H19NO3 derived from morphine that is about five times as active biologically as morphine and is administered in the form of its hydrochloride C17H19NO3·HCl as an analgesic
— called also dihydromorphinone
Comments on hydromorphone
What made you want to look up hydromorphone? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
More Confusing Words—Quiz
- The magician
______moved the selected card to the top of the deck.
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- More Confusing Words—Quiz
How many of these commonly confused words do you know?
Take the quiz - Name that Thing: Toys and Games Edition
It's all fun and games until someone beats your high score.
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Bee Cubed
Listen to the words and spell through all three levels.
Play the game
Share hydromorphone