"ar-" meaning in English

See ar- in All languages combined, or Wiktionary

Prefix

Etymology: Extracted from the word aromatic. Head templates: {{en-prefix|head=ar-}} ar-
  1. (organic chemistry) Forming classification names for classes of organic compounds that contain a carbon skeleton and one or more aromatic rings. Tags: morpheme
    Sense id: en-ar--en-prefix-H3V60kF1 Categories (other): Organic chemistry, English entries with incorrect language header, Pages using etymon with no ID, Pages with 7 entries, Pages with entries, Chemical notation, Trigonometric functions Disambiguation of English entries with incorrect language header: 51 48 1 Disambiguation of Pages using etymon with no ID: 7 9 9 8 6 4 18 20 0 6 5 6 3 0 Disambiguation of Pages with 7 entries: 17 5 5 4 3 18 13 14 0 14 3 3 2 0 Disambiguation of Pages with entries: 13 5 5 4 2 15 17 17 0 11 1 1 0 0 1 0 2 2 4 1 Disambiguation of Chemical notation: 49 47 4 Disambiguation of Trigonometric functions: 44 55 1 Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences
The following are not (yet) sense-disambiguated
Etymology number: 1

Prefix

Etymology: Shortened from area (because the function describes the area under a hyperbola), by analogy with arc-, the corresponding prefix for the circular trigonometric functions. Head templates: {{en-prefix}} ar-
  1. (trigonometry) Used to form the names of inverse hyperbolic functions, and the symbols for these functions. Tags: morpheme Synonyms: arc- [proscribed, sometimes], a-, -1
    Sense id: en-ar--en-prefix-SZkj7cvi Categories (other): Trigonometry, English entries with incorrect language header, Pages using etymon with no ID, Pages with 7 entries, Pages with entries, Chemical notation, Hyperbolic functions, Trigonometric functions Disambiguation of English entries with incorrect language header: 51 48 1 Disambiguation of Pages using etymon with no ID: 7 9 9 8 6 4 18 20 0 6 5 6 3 0 Disambiguation of Pages with 7 entries: 17 5 5 4 3 18 13 14 0 14 3 3 2 0 Disambiguation of Pages with entries: 13 5 5 4 2 15 17 17 0 11 1 1 0 0 1 0 2 2 4 1 Disambiguation of Chemical notation: 49 47 4 Disambiguation of Hyperbolic functions: 23 77 1 Disambiguation of Trigonometric functions: 44 55 1 Topics: mathematics, sciences, trigonometry
The following are not (yet) sense-disambiguated
Etymology number: 2

Prefix

Etymology: Assimilated form of ad- before r. From Latin ad-. Etymology templates: {{der|en|la|ad-}} Latin ad- Head templates: {{en-prefix}} ar-
  1. Alternative form of ad- (“to, toward”). Tags: alt-of, alternative, morpheme Alternative form of: ad- (extra: to, toward) Derived forms: arrange, array, arrears, arrest, arrive, arrogance
    Sense id: en-ar--en-prefix-WIeSCq3L
The following are not (yet) sense-disambiguated
Etymology number: 3
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          "text": "Potassium permanganate oxidizes ac-tetrahydronaphtylamine to o-hydrocinnam-carboxylic acid (p. 245); ar-tetrahydronaphthylamine, however, because of the oxidation of its amided benzene nucleus, is changed to adipic acid together with oxalic acid (B. 22, 767): […]"
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          "ref": "1919 January 10, C. J. West, abstract of G. Schroeter and K. Thomas, “Transformation of tetrahydronaphthalene (tetralin) in the animal body”; in American Chemical Society, Chemical Abstracts, Volume 13, Number 1, page 43",
          "text": "ar-Tetrahydro-α-carbamidonaphthalene, C₁₁H₁₄ON₂, crystallized in square plates from alc., soften at 198° and melts at about 206° (quickly heated, at 212°)."
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          "ref": "2006, Amit Arora, Aromatic Organic Chemistry, Discovery Publishing House, published 2007, →ISBN, page 173:",
          "text": "1-Naphthylamine is reduced by sodium and isopentanol to ar'''-tetrahydro-1-naphthylamine; the prefix ar- is the abbreviation of aromatic and indicates that the four hydrogen atoms are not in the ring containing the amino-group: […]",
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          "text": "Potassium permanganate oxidizes ac-tetrahydronaphtylamine to o-hydrocinnam-carboxylic acid (p. 245); ar-tetrahydronaphthylamine, however, because of the oxidation of its amided benzene nucleus, is changed to adipic acid together with oxalic acid (B. 22, 767): […]"
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          "ref": "1919 January 10, C. J. West, abstract of G. Schroeter and K. Thomas, “Transformation of tetrahydronaphthalene (tetralin) in the animal body”; in American Chemical Society, Chemical Abstracts, Volume 13, Number 1, page 43",
          "text": "ar-Tetrahydro-α-carbamidonaphthalene, C₁₁H₁₄ON₂, crystallized in square plates from alc., soften at 198° and melts at about 206° (quickly heated, at 212°)."
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          "text": "1-Naphthylamine is reduced by sodium and isopentanol to ar'''-tetrahydro-1-naphthylamine; the prefix ar- is the abbreviation of aromatic and indicates that the four hydrogen atoms are not in the ring containing the amino-group: […]",
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Download raw JSONL data for ar- meaning in English (5.0kB)


This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2026-09-16 from the enwiktionary dump dated 2026-09-02 using wiktextract (d6fca27 and 65e1673). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

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