Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
adj
Abbreviation of restricted.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
Qualifier: film certification
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Abbreviation of reverse.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Abbreviation of right (as opposed to left).
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
character
The eighteenth letter of the English alphabet, called ar and written in the Latin script.
Definition source: English Wiktionary via Wiktextract
Usage: letter, lowercase
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
det
Abbreviation of our.
Definition source: English Wiktionary via Wiktextract
Usage: Internet, abbreviation, alt-of
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
Abbreviation of Redactor(s) in the context of the documentary hypothesis, referring to a compiler and editor of the Torah.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
Topics: lifestyle, religion
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
A programming language for statistics and data visualization.
Definition source: English Wiktionary via Wiktextract
Topics: computer-languages, computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Symbol for reverse (“gear setting”).
Definition source: English Wiktionary via Wiktextract
Usage: alt-of, symbol
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Symbol for radius.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of, symbol
Topics: geometry, mathematics, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of Republican, especially preceding the constituent location.
Definition source: English Wiktionary via Wiktextract
Usage: US, abbreviation, alt-of
Topics: government, politics
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of Rex (“King”) or Regina (“Queen”), the initial by which a British monarch signs documents after his or her name.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
Topics: government, monarchy, politics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of Rex (“King”) or Regina (“Queen”), the initial by which a British monarch signs documents after his or her name.
The Crown, the government of a monarchy.
Definition source: English Wiktionary via Wiktextract
Topics: government, law, monarchy, politics
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of ring.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
Topics: entertainment, handbells, lifestyle, music
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of rook.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
Topics: board-games, chess, games
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of run(s); the statistic reporting the number of runs scored by a player.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
Topics: ball-games, baseball, cricket, games, hobbies, lifestyle, sports
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of Thursday.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, especially
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of region, in the sense of the regions of the Philippines.
Definition source: English Wiktionary via Wiktextract
Usage: Philippines, abbreviation, alt-of
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Abbreviation of rotation.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
Qualifier: rhythmic gymnastics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
num
The eighteenth numeral symbol of the English alphabet, called ar and written in the Latin script.
Definition source: English Wiktionary via Wiktextract
Usage: lowercase
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
pron
Eye dialect spelling of I.
Definition source: English Wiktionary via Wiktextract
Usage: England, alt-of, informal, nonstandard, pronunciation-spelling
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
symbol
vinyl disk (record)
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
verb
Abbreviation of are.
Definition source: English Wiktionary via Wiktextract
Usage: Internet, abbreviation, alt-of
Synonyms: none provided
Antonyms: none provided
noun
the length of a line segment between the center and circumference of a circle or sphere
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: radius
Antonyms: none provided
Broader terms: length
Narrower terms: semidiameter, radius of curvature
noun
the 18th letter of the Roman alphabet
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: letter, letter of the alphabet, alphabetic character
noun
(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: gas constant, universal gas constant
Antonyms: none provided
Broader terms: constant
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
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: roentgen
Antonyms: none provided
Broader terms: radioactivity unit
History
Abbreviations.
Old English lower case letter r, from 7th century replacement by Latin lower case r of the Anglo-Saxon Futhorc letter ᚱ.
From the Etruscan letter 𐌓 (r, “er”), from the Ancient Greek letter Ρ (R, “rho”), derived from the Phoenician letter 𐤓 (r, “reš”), from the Egyptian hieroglyph 𓁶.
From are and our, pronounced like the name of the letter r.
See I.
Across languages
1 source translations are retained for this English entry.
