Laccolith

//ˈlækəlɪθ// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A mass of igneous or volcanic rock found within strata which forces the overlaying strata upwards and forms domes.
  2. 2
    A mass similar to lopolith but concave up.

Etymology

From Ancient Greek λάκκος (lákkos, “cistern”) + -lith.

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