Word.ws English Dictionary

alum rock

alum rock noun: the mineral alunite.

Noun

alum rock (uncountable)

  1. The mineral alunite.

Proper noun capitalized: Alum Rock

Alum Rock

  1. A census-designated place in Santa Clara County, California, United States.
  2. A historical community in Clarion County, Pennsylvania, United States.
  3. An inner suburb and adjacent council ward in Birmingham, West Midlands, England (OS grid ref SP1287).

Questions about alum rock

What does alum rock mean?
Alum rock means the mineral alunite.
What part of speech is alum rock?
Alum rock can be a noun or a proper noun.

Words near alum rock in the dictionary

  1. alulae
  2. alular
  3. alulas
  4. Alulim
  5. alum
  6. alum rock
  7. alum schist
  8. alum shale
  9. alum slate
  10. alum stone
  11. alum stones

Source and license

Adapted from Wiktionary: alum rock (page history and authors); Alum Rock (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: “alum rock.” Word.ws, https://word.ws/alum_rock. Based on Wiktionary, CC BY-SA 4.0.