Meaning
A mass of igneous or volcanic rock found within strata which forces the overlaying strata upwards and forms domes.
Etymology
Origin: Ancient Greek
From Ancient Greek λάκκος (lákkos, “cistern”) + -lith.
NYT Puzzle Appearances
No published puzzle dates on file for this word yet. It is part of the official NYT Spelling Bee word list for 2022, 2023, 2026.