Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

Rh-negative

adjective Rh-neg·a·tive \ ˌär-ˌāch-ˈne-gə-tiv \

Definition of Rh-negative

: lacking Rh factor in the red blood cells

See Rh-negative defined for English-language learners

See Rh-negative defined for kids

First Known Use of rh-negative

1945

in the meaning defined above

See Words from the same year
NEW! Time Traveler

RH-NEGATIVE Defined for English Language Learners

Rh-negative

adjective

Definition of Rh-negative for English Language Learners

  • medical : not having Rh factor in the blood

Medical Dictionary

Rh-negative

adjective Rh-neg·a·tive \ ˌär-ˌāch-ˈneg-ət-iv \

medical Definition of Rh-negative

: lacking Rh factor in the blood

Seen and Heard

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

show hide

Love words? Need even more definitions?

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

WORD OF THE DAY

adulation

play

excessive admiration or flattery

Get Word of the Day daily email!

TRENDING NOW

  1. hogwash 'nonsense, balderdash'

  2. probity 'adherence to the highest principles and ideals'

  3. sequacious 'intellectually servile'

  4. inadmissible 'not capable of being allowed'

  5. oligarch, pejorative 'a member a government in which a small group exercises control especially for corrupt and selfish purposes'

SEE ALL

BROWSE DICTIONARY

rhm
Rh-negative
rho

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet-pasta-spelling-help
  • Which is the correct spelling?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

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

TAKE THE QUIZ

Love words? Need even more definitions?

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

Words at Play

Ask the Editors

Word Games