variolite

(verē ə līt′)

noun

Geol. any igneous rock containing varioles

Origin: Ger variolit < ML variola (see variola): from its pitted surface

See variolite in American Heritage Dictionary 4

noun
A basic rock whose pockmarked appearance is caused by the presence of numerous white, rounded, embedded spherules.

Related Forms:

  • varˌi·o·litˈic (-lĭtˈĭk) adjective
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