“hydroxydopamine”

We have one entry that includes the term hydroxydopamine.

6-hydroxydopamine

noun

: an isomer of norepinephrine that is taken up by catecholaminergic nerve fibers, causes the degeneration of their terminals, and has been used experimentally to study the behavioral and physiological effects of destroying selected groups of neurons in the central nervous systems of experimental animals

See the full definition

Word of the Day

Listen to the pronunciation of foray

See Definitions and Examples »

Test Your Vocabulary

Challenging Standardized Test Words

  • high school student holding a pencil leaning over a sat test
  • Despite the cacophony, the student tried to study.
Name That Thing

You know what it looks like… but what is it called?

TAKE THE QUIZ
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.

Pick the best words!

PLAY
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
vector art of man ready to cut messy balls of thread with scissors
Commonly Confused Words Quiz Vol. 2 A quiz to (peak/peek/pique) your interest.
See All