Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

RU-486

play
noun \ˈär-ˌyü-ˌfȯr-ˌā-tē-ˈsiks\

Definition of RU-486

  1. :  a drug C29H35NO2 taken orally to induce abortion especially early in pregnancy by blocking the body's use of progesterone —called also mifepristone



Origin of ru-486

Roussel-UCLAF, the drug's French manufacturer + 486, laboratory serial number


First Known Use: 1983


Medical Dictionary

RU–486

play
noun \ˌär-(ˌ)yü-ˌfō(ə)r-ˌāt-ē-ˈsiks\

Medical Definition of RU–486

  1. :  a drug C29H35NO2 taken orally to induce abortion especially early in pregnancy by blocking the body's use of progesterone—called also mifepristone




Learn More about ru-486

  1. Medical Dictionary: Definition of "RU-486" Britannica.com: Encyclopedia article about "RU-486"


Seen and Heard

What made you want to look up RU-486? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 14, 2016

to hug and kiss another person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

16.96 pounds 2.2 pounds 100 pounds 196.5 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ