Word.ws English Dictionary

'a'a

'a'a is the alternative form of aa.

Meaning of aa

Noun

aa (uncountable)

  1. 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.
    • We...saw ‘pahoihoi’ or solid lava forming, and also ‘aa’ or clinkers.1859, R. C. Haskell, American journal of science and arts, series XXVIII

See all 13 meanings of aa

Questions about 'a'a

What is 'a'a the alternative form of?
'a'a is the alternative form of aa.

Words near 'a'a in the dictionary

  1. '70s
  2. '80s
  3. '90s
  4. 'a
  5. 'a'
  6. 'a'a
  7. 'a'ā
  8. 'abd
  9. 'abds
  10. 'ad
  11. 'air

Source and license

Adapted from Wiktionary: 'a'a (page history and authors); aa (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “'a'a.” Word.ws, https://word.ws/%27a%27a. Based on Wiktionary, CC BY-SA 4.0.