lapillus

lapillus Definition

la·pil·lus (lə pil′əs)

noun pl. -·pil′li′-ī′

a small fragment of igneous rock, up to the size of a walnut, ejected from a volcano

Etymology: L, dim. of lapis, stone

lapillus Usage Examples

Adjective modifier

accretionary: At Poris ignimbrites contain accretionary lapilli, evidence of column entrained water or distal encounters with the sea.

Browse dictionary entries near lapillus