Rh

1 of 3

adjective

ˌär-ˈāch How to pronounce Rh (audio)
: of, relating to, or being an Rh factor
Rh antigens
Rh sensitization in pregnancy

Rh

2 of 3

symbol

rhodium

RH

3 of 3

abbreviation

1
relative humidity
2
right hand; right-hander

Word History

First Known Use

Adjective

1940, in the meaning defined above

Time Traveler
The first known use of Rh was in 1940

Phrases Containing Rh

Dictionary Entries Near Rh

rgt

Rh

RH

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Cite this Entry

“Rh.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Rh. Accessed 21 Nov. 2024.

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Medical Definition

Rh

1 of 3 adjective
ˈär-ˈāch How to pronounce Rh (audio)
: of, relating to, or being an Rh factor
Rh antigens
Rh sensitization in pregnancy

Rh

2 of 3 symbol
rhodium

RH

3 of 3 abbreviation
relative humidity

More from Merriam-Webster on Rh

Britannica.com: Encyclopedia article about Rh

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