A1

See also: A 1, A-1, A-1+, and a1

Translingual

The relative size of A1 paper.

Etymology

• (paper size): Specified in ISO 216.

Symbol

A1

1. (international standards) ISO 216 standard paper size of 594 mm × 841 mm (23.39 in × 33.11 in), with a surface area of 0.5 m² (5.38 sq ft).
2. (finance) Long-term bond credit rating by Moody's Investors Service, indicating that a bond is upper-medium grade with low risk of default.

See also

ISO 216/269 paper sizes

A series: 4A0 2A0 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 B series: B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 C series: C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10

English

Etymology 1

From various rating systems, as that of Lloyd's of London or the condition of insured ships. First attested in 1837.

Alternative forms

• A-1, A 1

Adjective

A1 (not comparable)

1. (informal) In good health.
2. (informal) In excellent or top condition.
3. (of a ship) First-class. (Compare A 2 and A 3, which are inferior grades.)

Etymology 2

Noun

A1 (plural A1s)

1. Under the International Union of Railways (French: Union internationale des chemins de fer, UIC) classification system, a steam locomotive that has two coupled driving wheels followed by two trailing wheels, with no leading wheels; also called an 0-2-2.

Anagrams

• 1-A, 1A

Chinese

Pronunciation

• Cantonese (Jyutping): ei¹ wan¹, ei¹ jat¹

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• Cantonese
  • (Standard Cantonese, Guangzhou–Hong Kong)⁺
    • Jyutping: ei¹ wan¹, ei¹ jat¹
    • Yale: ēi wān, ēi yāt
    • Cantonese Pinyin: ei¹ wan¹, ei¹ jat⁷
    • Guangdong Romanization: éi¹ wen¹, éi¹ yed¹
    • Sinological IPA ^(key): /ei̯⁵⁵ wɐn⁵⁵/, /ei̯⁵⁵ jɐt̚⁵/

Noun

A1

1. (Hong Kong Cantonese) front page of a newspaper

Synonyms

• 頭版／头版 (tau⁴ baan²)

Norwegian Bokmål

Etymology

See the Wikipedia article ISO 216, the international standard on paper sizes.

Pronunciation

• IPA^(key): /ˈɑːeːn/

• Audio

  (file)

• Rhymes: -eːn
• Hyphenation: A‧1

Noun

A1 (uncountable)

1. A1 (a standard paper size, defined by ISO 216)

See also

• (A paper sizes): 2A0   A0   A1   A2   A3   A4   A5   A6   A7   A8   A9   A10

References

• “A-format” in Store norske leksikon