One of the mysteries of the English language finally explained.
Rock fragments ejected from a volcano.
- ‘Mount Vesuvius' eruption buried the ancient Roman city of Pompeii in volcanic ash and lapilli, preserving it in its current ghost-town-like state.’
- ‘We infer that the framework through which transport took place consists of lapilli lodged within elutriation networks similar to those observed in the field (vertical ‘pipes’ having elongated sheet-like forms in three dimensions).’
- ‘Some matrix ash samples were also analysed to ensure that the complete geochemical range could be assessed, and where lapilli were not available.’
- ‘We thought they might be lapilli - little volcanic hailstones that form when you have an eruption of volcanic ash and it coagulates and falls out.’
- ‘Atmospheric aggregates include: fine particles lodged in the vesicles of larger grains; ash clots and flakes bound by electrostatic forces; accretionary lapilli, pellets or mud-drops formed by wet particle adhesion.’
Mid 18th century (in the general sense ‘stones, pebbles’): via Italian from Latin, plural of lapillus, diminutive of lapis ‘stone’.
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