from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A trigonal-hexagonal scalenohedral mineral containing aluminum, hydrogen, lead, oxygen, and phosphorus.

from The Century Dictionary and Cyclopedia

  • n. A hydrous phosphate of lead and alumina occurring in globular or reniform crusts of a yellow to brown color, looking like gum (whence the name).


plumbo- +‎ gummite (Wiktionary)


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