Word.ws English Dictionary

a aa

a aa 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 aa

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

Words near a aa in the dictionary

  1. a
  2. A & A
  3. A & E
  4. A & R
  5. A 1
  6. a aa
  7. A and E
  8. A and M
  9. a baculo
  10. a bad penny always comes back
  11. a bad penny always turns up

Source and license

Adapted from Wiktionary: a aa (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 aa.” Word.ws, https://word.ws/a_aa. Based on Wiktionary, CC BY-SA 4.0.