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
Initialism of autoregressive.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, initialism, not-comparable
Topics: mathematics, sciences, statistics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
intj
Alternative form of arr.
Definition source: English Wiktionary via Wiktextract
Usage: UK, West-Country, West-Midlands, alt-of, alternative
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
Abbreviation of Arkansas: a state of the United States.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
No example sentence was provided for this meaning.
Synonyms: Ark., Ark
Antonyms: none provided
name
Abbreviation of Arunachal Pradesh: a state of India.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
name
Abbreviation of American Revolution
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of
No example sentence was provided for this meaning.
Synonyms: ARW, AWI
Antonyms: none provided
noun
An AR-15 personal semi-automatic rifle, M-16 assault rifle, M-4 carbine, derivative or related gun; the Armalite AR family and derivatives.
Definition source: English Wiktionary via Wiktextract
Usage: countable
Topics: engineering, government, military, natural-sciences, physical-sciences, politics, tools, war, weaponry
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
An assault rifle or automatic rifle.
Definition source: English Wiktionary via Wiktextract
Usage: countable, informal
Topics: engineering, government, military, natural-sciences, physical-sciences, politics, tools, war, weaponry
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of accounts receivable.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, initialism, plural, plural-only, uncountable
Topics: accounting, business, finance
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of acknowledgment of receipt.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Qualifier: postal
Topics: hobbies, lifestyle, philately
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of age regression.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Qualifier: age regression
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of augmented reality.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, initialism, uncountable
Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
Synonyms: MR, mixed reality, spatial computing, CPS, w:cyber-physical system
Antonyms: none provided
noun
Initialism of alternate reality.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, slang, uncountable
Topics: lifestyle
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of American record, national record for the United States.
Definition source: English Wiktionary via Wiktextract
Usage: US, abbreviation, alt-of, countable, initialism
Topics: hobbies, lifestyle, sports
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of administrative rule or administrative regulation.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of androgen receptor.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of area record, best achievement among those by persons from a given continent.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism
Topics: hobbies, lifestyle, sports
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of armed robbery.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Qualifier: crime
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of artificial respiration.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: emergency-medicine, medicine, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of aspect ratio.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of assembly resolution.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: government, law, politics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of atmospheric river.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: climatology, meteorology, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Initialism of aerial refueling.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, countable, initialism, uncountable
Topics: aeronautics, aerospace, aviation, business, engineering, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The name of the Latin script letter R/r.
Definition source: English Wiktionary via Wiktextract
Synonyms: none provided
Antonyms: none provided
noun
Alternative letter-case form of ar.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
particle
Alternative form of arr.
Definition source: English Wiktionary via Wiktextract
Usage: UK, West-Country, West-Midlands, alt-of, alternative
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
particle
Alternative form of ah (question particle).
Definition source: English Wiktionary via Wiktextract
Usage: Manglish, Singlish, alt-of, alternative
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
verb
Obsolete spelling of are.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of, obsolete
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
a state in south central United States; one of the Confederate states during the American Civil War
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: Arkansas, Land of Opportunity
Antonyms: none provided
Broader terms: American state
noun
a unit of surface area equal to 100 square meters
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: are
Antonyms: none provided
Broader terms: area unit, square measure
noun
a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: argon, atomic number 18
Antonyms: none provided
Broader terms: chemical element, element, noble gas, inert gas, argonon
History
Abbreviation.
From Middle English *ar, arres pl, from earlier *er.
Across languages
48 source translations are retained for this English entry.
