— diapiric /duy'euh pir"ik/ , adj.
/duy"euh pear'/ , n. Geol.
a dome, or anticline, the upper regions of which have been ruptured and penetrated by material squeezed up from below. Cf. plume (def. 10), salt dome .
[ 1915-20; diapeírein to drive through, pierce; dia- DIA- + peírein to pierce ]