aa

See also Appendix:Variations of "aa", and Appendix:ISO 639-1 language codes

English

Wikipedia

Alternative forms

• a'a

Etymology

From Hawaiian ʻaʻā.

Pronunciation

• (RP) IPA: /ˈɑː.ɑː/, enPR: ä'ä, X-SAMPA: /"A:A:/
• (US) IPA: /ˈɑ.ɑː/
• Rhymes: -ɑː

Noun

basaltic lava

aa (uncountable)

1. (volcanology) A form of lava flow associated with Hawaiian-type volcanoes, consisting of basaltic rock, usually dark-colored with a jagged and loose, clinkery surface. Compare pahoehoe. [First attested in the mid 19^th century.]
   • 1859, R. C. Haskell, American journal of science and arts, series XXVIII

     We...saw ‘pahoihoi’ or solid lava forming, and also ‘aa’ or clinkers.

   • 1883, Clarence E. Dutton, Fourth Annual report of the United States Geological Survey:

     The second form of the lavas is called by the natives a-a, and its contrast with pahoehoe is about the greatest imaginable. It consists mainly of clinkers sometimes detached, sometimes partially agglutinated together with a bristling array of sharp, jagged, angular fragments.

   • 1944, Charles A. Cotton, Volcanoes as landscape forms:

     Cooling and solidification frequently takes a different course [...] in lava flows, producing the clinker-like ‘aa’ lava.

   • 1999, A. Ganeri: Violent Volcanoes:

     A'a is thick, sticky lava which forms jagged, chunky rock when it cools.

   • 2004, Richard Fortey, The Earth, Folio Society 2011, p. 44:

     I overheard a geologist say that a good pair of boots can be rasped to bits on a‘a in a couple of months.

2. Initialism of acetic acid.
3. Initialism of acting age.
4. Abbreviation of adjectives.
5. (medicine) Initialism of alveolar-arterial.
6. Initialism of aminoacetone.
7. Initialism of approximate absolute.
8. Initialism of arachidonic acid.
9. Initialism of armature accelerator.
10. Abbreviation of arteries.
11. Initialism of ascending aorta.
12. Initialism of atomic absorption.
13. Initialism of author's alteration.
14. Initialism of average audience.

Adjective

aa (comparative more aa, superlative most aa)

1. Initialism of arctic-alpine.

Translations

a form of lava flow associated with Hawaiian-type volcanoes

• Danish: apalhraun (da) n
• Dutch: scherpe lava (nl) m and f
• Estonian: aa-laava (et)
• Faroese: bøklalava (fo) n

• Hawaiian: ʻaʻā
• Icelandic: apalhraun (is) n
• Irish: aa (ga) m

Initialism

aa

1. Always afloat
2. Ana

Abbreviation

aa

1. Equal parts

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Acholi

Verb

aa

1. come

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Dutch

Noun

aa f (plural aa's, diminutive aatje)

1. (especially in names) Alternative spelling of a.

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Estonian

Interjection

aa

1. An interjection expressing recognition -

   Aa, see oled sina. : Oh, it's you.

2. An interjection expressing understanding -

   Aa, saan aru. : Ah, I understand.

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Finnish

Pronunciation

• Audio

  (file)

Noun

aa

1. The name of the Latin script letter A/a.

Declension

Declension of aa (type maa) singular plural nominative aa aat genitive aan aiden aitten partitive aata aita accusative aa aan aat inessive aassa aissa elative aasta aista illative aahan aihin adessive aalla ailla ablative aalta ailta allative aalle aille essive aana aina translative aaksi aiksi instructive – ain abessive aatta aitta comitative – aineen

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French

Etymology

From Hawaiian ʻaʻā.

Noun

aa m (plural aas)

1. (geology, often attributive) The surface of an aa lava flow.

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Japanese

Romanization

aa

1. See ああ

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Norwegian

Letter

aa

1. Obsolete spelling of å.

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Pennsylvania German

Adverb

aa

1. also
   • 1908, Astor C. Wuchter, “Die Mudderschprooch”, in Earl C. Haag editor, A Pennsylvania German Anthology, page 56:

     […] Datt sin aa Mensche, graad wie do […]

     There are people there too, just like here

Preposition

aa

1. on

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Scots

Alternative forms

• aw

Determiner

aa

1. all

Noun

aa (uncountable)

1. all

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Sundanese

Noun

aa

1. older brother

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Tagalog

Pronunciation

• IPA: /a.ˈaʔ/

Noun

aâ

1. dirt, filth, feces or any dirty thing

Usage notes

• This word is used when speaking to small children about anything dirty and also used by the children themselves.