Hyaloclastite

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A type of volcanic rock containing glassy clasts, that is, fragments. countable, uncountable

    "Explosive cooling and the sedimentation of glassy fragments results in a rock with a characteristic speckly texture known as hyaloclastite."

Example

More examples

"Explosive cooling and the sedimentation of glassy fragments results in a rock with a characteristic speckly texture known as hyaloclastite."

Etymology

From hyalo- + clast + -ite.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.