R Definition & Meaning
r
- noun
- a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
- (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
- the 18th letter of the Roman alphabet
- the length of a line segment between the center and circumference of a circle or sphere
"R" in song lyrics
See how r is used in real songs:
-
"It goes A to the k, b, the a, the r"
Akbar — No Suckas Allowed -
"R"
Akon — Mama Africa -
"Next stop, you can transfer to the N or the R"
Apocalipps — 4 the Doe
Words that rhyme with r
Usage tips for "r"
Understanding the precise definition of a word helps you use it with confidence. When using "r" in your writing, consider whether you need the word itself or one of its synonyms — subtle differences in meaning can change the tone of a sentence. If you're writing poetry or song lyrics, check the rhymes for r to find words that pair well.
Use "r" in a verse
Now that you know what "r" means, try using it in your own lyrics:
Generate a verseFrequently asked questions
- What does r mean?
- a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole the 18th letter of the Roman alphabet the length of a line segment between the center and circumference of a circle or sphere
- What part of speech is r?
- R is a noun.
- How many definitions does r have?
- R has 4 definitions across 1 part of speech (noun).